ICS Part 1 Physics English Medium Chapter 2 Online Short Questions Test with Answers

Online Short Questions For Chapter 2 "ICS Part 1 Physics Chapter 2 Short Questions Test "

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Physics - ICS Part 1 Physics Chapter 2 Short Questions Test

Question # 1

Give two conditions of equilibrium.

Ans 1:

Question # 2

Can a vector have a component greater than the vector's magnitude?

Ans 1: No' the magnitude of the component of a vector can never be greater than the vector's magnitude. The maximum value of magnitude of component can be equal to the magnitude of the vector.

Question # 3

Define and explain position vector ?

Ans 1:

Question # 4

Can a body rotate about its center of gravity under the action of its weight?

Ans 1: No a body cannot rotate about its center of gravity under the action of its weight.Because the whole weight of the body acts on its center of gravity. The moment arm is zero in this case .

Question # 5

What do you mean by concurrent force ? Explain with examples ?

Ans 1: Concurrent Force:Two or more than two force are said to be concurrent force, If they are acting upon a body and their lines of action passes through a common point.Explanation:Consider a bulb which is suspended by means of a thread from a rigid support In this case the weight 'w' of the bulb is acting in down wards direction while the tension 'T' in the thread is acting of both forces passes through the same point or common point. Both forces balance each other and as a a result the bulb remain the state of equilibrium such force are know as concurrent forces.

Question # 6

State condition of rotational equilibrium.

Ans 1: The vector sum of all torque acting on any object must be zero.
When this condition of equilibrium is satisfied, there is no angular acceleration and body will be in rotational equilibrium.Hence, a body cannot rotate about center of gravity under the action of its weight.

Question # 7

What are rectangular components of a vector?

Ans 1: The components of a vector which are perpendicular to each are called rectangular components.

Question # 8

Explain rectangular coordinates system.

Ans 1: Two lines drawn at right angles to each other are know as coordinate axes and their point of intersection is known as origin. This system of coordinate axes is called rectangular coordinate system.
The horizontal line is named x-axis and vertical line y-axis.The direction of x-axis is positive towards right and y-axis is positive upward.

Question # 9

Two vector of magnitude 10 each making angle 180^oWith each other.Find the magnitude of their resultant.

Ans 1: We know that the sum of two vectors which are equal in magnitude and opposite in direction is zero.
Two vectors of magnitude 10 each making angle 180^oWith each other are in opposite direction.Therefore, the magnitude of their resultant will be equal to zero.

Question # 10

You are falling off the edge.What should you do to avoid falling?

Ans 1: You should bend yourself backward to avoid falling off the edge.Because of this center of gravity will shift backward.

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ICS Part 1 Physics Chapter 2 Short Questions Test - Set 1

Question # 1

Give two conditions of equilibrium.

Ans 1:

Question # 2

Can a vector have a component greater than the vector's magnitude?

Ans 1: No' the magnitude of the component of a vector can never be greater than the vector's magnitude. The maximum value of magnitude of component can be equal to the magnitude of the vector.

Question # 3

Define and explain position vector ?

Ans 1:

Question # 4

Can a body rotate about its center of gravity under the action of its weight?

Ans 1: No a body cannot rotate about its center of gravity under the action of its weight.Because the whole weight of the body acts on its center of gravity. The moment arm is zero in this case .

Question # 5

What do you mean by concurrent force ? Explain with examples ?

Ans 1: Concurrent Force:Two or more than two force are said to be concurrent force, If they are acting upon a body and their lines of action passes through a common point.Explanation:Consider a bulb which is suspended by means of a thread from a rigid support In this case the weight 'w' of the bulb is acting in down wards direction while the tension 'T' in the thread is acting of both forces passes through the same point or common point. Both forces balance each other and as a a result the bulb remain the state of equilibrium such force are know as concurrent forces.

Question # 6

State condition of rotational equilibrium.

Ans 1: The vector sum of all torque acting on any object must be zero.
When this condition of equilibrium is satisfied, there is no angular acceleration and body will be in rotational equilibrium.Hence, a body cannot rotate about center of gravity under the action of its weight.

Question # 7

What are rectangular components of a vector?

Ans 1: The components of a vector which are perpendicular to each are called rectangular components.

Question # 8

Explain rectangular coordinates system.

Ans 1: Two lines drawn at right angles to each other are know as coordinate axes and their point of intersection is known as origin. This system of coordinate axes is called rectangular coordinate system.
The horizontal line is named x-axis and vertical line y-axis.The direction of x-axis is positive towards right and y-axis is positive upward.

Question # 9

Two vector of magnitude 10 each making angle 180^oWith each other.Find the magnitude of their resultant.

Ans 1: We know that the sum of two vectors which are equal in magnitude and opposite in direction is zero.
Two vectors of magnitude 10 each making angle 180^oWith each other are in opposite direction.Therefore, the magnitude of their resultant will be equal to zero.

Question # 10

You are falling off the edge.What should you do to avoid falling?

Ans 1: You should bend yourself backward to avoid falling off the edge.Because of this center of gravity will shift backward.

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ICS Part 1 Physics Chapter 2 Short Questions Test - Set 2

Question # 1

When body is in .
Translation equilibrium
Rotational equilibrium

Ans 1:

Question # 2

Define null and equal vectors.

Ans 1: Null vector: A vector of zero magnitude and arbitrary direction is called null vector.
Equal vector: Two vectors are said to be equal if they have same magnitude direction.

Question # 3

Two vectors have unequal magnitude. Can their sum be zero? Explain.

Ans 1: No, the sum of two vectors having unequal magnitudes can't be zero. The sum of two vectors will be zero only when their magnitudes are equal and they act in opposite direction.

Question # 4

Why can a vector not have a component greater than the vectors magnitude?

Ans 1: The magnitude of the components of a vector can not be greater than the vectors magnitude because component is always a part of the resultant vector. This relation show that if any two components of a vector are zero then the magnitude of the third components may be equal to the vectors magnitude but it can never be greater.

Question # 5

Define Physical quantities & Magnitude?

Ans 1: Physical Quantities:Those quantities which can be measured are known as physical quantities. For example, length, mass, temperature, speed, velocity, acceleration, energy , torque etc.
Magnitude:A number with proper unit is known as magnitude for example, 100 kg, 50 N, 1000 m etc.

Question # 6

Write down the condition for a body to be in complete equilibrium.

Ans 1:

Question # 7

You are falling off the edge.What should you do to avoid falling?

Ans 1: You should bend yourself backward to avoid falling off the edge.Because of this center of gravity will shift backward.

Question # 8

Define unit vector.How we find it?

Ans 1: A unit vector in a given direction is a vector with magnitudes one in that direction.Its is used to represent the direction of a vector.

Question # 9

The resultant of two vector, one is double in magnitude than the other, perpendicular to the smaller force. What is the angle between the two forces ?

Ans 1:

Question # 10

Give two conditions of equilibrium.

Ans 1:

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ICS Part 1 Physics Chapter 2 Short Questions Test - Set 3

Question # 1

Two vector of magnitude 10 each making angle 180^oWith each other.Find the magnitude of their resultant.

Ans 1: We know that the sum of two vectors which are equal in magnitude and opposite in direction is zero.
Two vectors of magnitude 10 each making angle 180^oWith each other are in opposite direction.Therefore, the magnitude of their resultant will be equal to zero.

Question # 2

Discuss the multiplication of a vector by a number?

Ans 1: We can multiple a vector by a number. If the number is positive, then the direction of given vector and product vector will remain the same. If the number id negative, then the given vector and product vector will be acting in opposite direction.

Question # 3

Define the term unit vector.

Ans 1: Vector having the unit magnitude is called the unit vector. It is used to indicate the direction of a given vector.

Question # 4

What is the moment of a force about the point lying on the axis of rotation?

Ans 1:

Question # 5

Discuss the addition of vector by rectangular component method?

Ans 1:

Question # 6

Discuss the commutative property of addition of vectors ?

Ans 1:

Question # 7

Two vectors have unequal magnitude.Can their components be equal in magnitude?

Ans 1: No, the components of two vectors cannot be equal in magnitude if the two vector have unequal magnitudes.

Question # 8

Define Physical quantities & Magnitude?

Ans 1: Physical Quantities:Those quantities which can be measured are known as physical quantities. For example, length, mass, temperature, speed, velocity, acceleration, energy , torque etc.
Magnitude:A number with proper unit is known as magnitude for example, 100 kg, 50 N, 1000 m etc.

Question # 9

A point object acted on by forces 4N, 5N, and 6N is in equilibrium. If 6N force is removed, what is the resultant force on the object ?

Ans 1:

Question # 10

Is it possible to add a vector quantity to a scalar quantity?

Ans 1: No it is not possible to add a vector quantity to a scalar quantity because the physical quantities of same nature can be added. Vectors can be added to vectors and scalars are added in scalars,but the vectors can't be added to scalar.

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ICS Part 1 Physics Chapter 2 Short Questions Test - Set 4

Question # 1

Define and explain the scalar product?

Ans 1:

Question # 2

Define equilibrium ?

Ans 1: Equilibrium:The state of a body, under the action of several forces acting together and there is no change in the translation motion as well as its rotational motion is known as equilibrium.

Question # 3

Why can a body not rotate about its centre of gravity under the action of its weight?

Ans 1: As we know that the centre of gravity is that point at which the whole weight of the body acts.In this case, the line of action of force (weight) passes the pivot point (centre of gravity).Therefore, moment arm is zero.As a result torque is also zero.

Question # 4

Can a body rotate about its center of gravity under the action of its weight?

Ans 1: No a body cannot rotate about its center of gravity under the action of its weight.Because the whole weight of the body acts on its center of gravity. The moment arm is zero in this case .

Question # 5

Two vectors have unequal magnitude. Can their sum be zero? Explain.

Ans 1: No, the sum of two vectors having unequal magnitudes can't be zero. The sum of two vectors will be zero only when their magnitudes are equal and they act in opposite direction.

Question # 6

State condition of rotational equilibrium.

Ans 1: The vector sum of all torque acting on any object must be zero.
When this condition of equilibrium is satisfied, there is no angular acceleration and body will be in rotational equilibrium.Hence, a body cannot rotate about center of gravity under the action of its weight.

Question # 7

Define null and equal vectors.

Ans 1: Null vector: A vector of zero magnitude and arbitrary direction is called null vector.
Equal vector: Two vectors are said to be equal if they have same magnitude direction.

Question # 8

Define null vector and component of a vector.

Ans 1: Null Vector is a vector of zero magnitude and arbitrary direction.
A component of a vector is its effective vale in a given direction.

Question # 9

Explain why do buses and heavy trucks have large steering wheels ?

Ans 1: We know that the magnitude of torque depends upon the moment arm and applied force T = r* f
Show that to produce greater torque with a less applied force, the value of moment arm 'r' must be taken as larger due to greater torque, we can turn the heavy trucks and buses have large steering wheels to produce greater torque and to make the drive more easy.

Question # 10

The gravitational Force acting on a satellite is always directed towards the centre of the earth?

Ans 1: We known that the torque depends upon the moments arm and applied force. Mathematically we have
T = r*F
As we have given that the gravitational force acting on a satellite is directed towards the centre of the earth. As for central force, the moment arm is zero r= 0 so T = o*F = 0
T= 0
Eq (2) shows that the torque produced by gravitational force acting on a satellite zero

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ICS Part 1 Physics Chapter 2 Short Questions Test - Set 5

Question # 1

Define null and equal vectors.

Ans 1: Null vector: A vector of zero magnitude and arbitrary direction is called null vector.
Equal vector: Two vectors are said to be equal if they have same magnitude direction.

Question # 2

Define torque.Write its units and dimensions,

Ans 1:

Question # 3

The vector sums of three vectors give a null vector. What can be orientation of the vectors?

Ans 1: If the three vectors are oriented in cyclic order i.e in the form of triangle, then they will give rise to null vector.

Question # 4

The gravitational Force acting on a satellite is always directed towards the centre of the earth?

Ans 1: We known that the torque depends upon the moments arm and applied force. Mathematically we have
T = r*F
As we have given that the gravitational force acting on a satellite is directed towards the centre of the earth. As for central force, the moment arm is zero r= 0 so T = o*F = 0
T= 0
Eq (2) shows that the torque produced by gravitational force acting on a satellite zero

Question # 5

Define the term unit vector.

Ans 1: Vector having the unit magnitude is called the unit vector. It is used to indicate the direction of a given vector.

Question # 6

Define Physical quantities & Magnitude?

Ans 1: Physical Quantities:Those quantities which can be measured are known as physical quantities. For example, length, mass, temperature, speed, velocity, acceleration, energy , torque etc.
Magnitude:A number with proper unit is known as magnitude for example, 100 kg, 50 N, 1000 m etc.

Question # 7

Define and explain the scalar product?

Ans 1:

Question # 8

A point object acted on by forces 4N, 5N, and 6N is in equilibrium. If 6N force is removed, what is the resultant force on the object ?

Ans 1:

Question # 9

Discuss the condition of equilibrium?

Ans 1: There are two condition of equilibrium which are given below.First Condition of equilibrium:According to the first condition of equilibrium, a body is said to be in equilibrium, if the vector sum of all external forces acting on the body is zero they cancel the effect of each other { F = 0In the component form we haveF1y+ F2y + F3y +................ +Fny =0Fy = 0A book lying on the table and paratrooper moving down words with uniform Velocity satisfies the first condition of equilibrium.Second Condition of Equilibrium:According to the condition of equilibrium, a body is said to be in equilibrium on a body is equal to zero.{ T = 0Explanation:There are certain situation in which on extended body will not be in equilibrium even when the first condition of equilibrium is satisfied. For Example, in the two equal forces are acting on a meter rod in opposite direction. As the line of action of these forces are not the same so the meter rod do not remain in state equilibrium and begins to rotate in anti clock wise direction. So the first condition of equilibrium is not sufficient in such a case Under such situations we should arrange the forces on the body in such a way, htat they causes clock-wise torque and anti-clock wise torque acting on the body simultaneously and cancel the effect other.

Question # 10

Define Torque (or) Moment of force?

Ans 1: The turning effect produced in a body about a fixed point due to an applied force is known as torque (or) Moment of force.

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ICS Part 1 Physics Short Questions Test

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ICS Part 1 Physics English Medium Chapter 2 Online Short Questions Test with Answers

Online Short Questions For Chapter 2 "ICS Part 1 Physics Chapter 2 Short Questions Test "

Physics - ICS Part 1 Physics Chapter 2 Short Questions Test

Give two conditions of equilibrium.

Can a vector have a component greater than the vector's magnitude?

Define and explain position vector ?

Can a body rotate about its center of gravity under the action of its weight?

What do you mean by concurrent force ? Explain with examples ?

State condition of rotational equilibrium.

What are rectangular components of a vector?

Explain rectangular coordinates system.

Two vector of magnitude 10 each making angle 180o With each other.Find the magnitude of their resultant.

You are falling off the edge.What should you do to avoid falling?

Prepare Complete Set Wise Questions For Chapter 2 "ICS Part 1 Physics Chapter 2 Short Questions Test "

Set 1

Set 2

Set 3

Set 4

Set 5

ICS Part 1 Physics Chapter 2 Short Questions Test - Set 1

Give two conditions of equilibrium.

Can a vector have a component greater than the vector's magnitude?

Define and explain position vector ?

Can a body rotate about its center of gravity under the action of its weight?

What do you mean by concurrent force ? Explain with examples ?

State condition of rotational equilibrium.

What are rectangular components of a vector?

Explain rectangular coordinates system.

Two vector of magnitude 10 each making angle 180o With each other.Find the magnitude of their resultant.

You are falling off the edge.What should you do to avoid falling?

ICS Part 1 Physics Chapter 2 Short Questions Test - Set 2

When body is in .Translation equilibriumRotational equilibrium

Define null and equal vectors.

Two vectors have unequal magnitude. Can their sum be zero? Explain.

Why can a vector not have a component greater than the vectors magnitude?

Define Physical quantities & Magnitude?

Write down the condition for a body to be in complete equilibrium.

You are falling off the edge.What should you do to avoid falling?

Define unit vector.How we find it?

The resultant of two vector, one is double in magnitude than the other, perpendicular to the smaller force. What is the angle between the two forces ?

Give two conditions of equilibrium.

ICS Part 1 Physics Chapter 2 Short Questions Test - Set 3

Two vector of magnitude 10 each making angle 180o With each other.Find the magnitude of their resultant.

Discuss the multiplication of a vector by a number?

Define the term unit vector.

What is the moment of a force about the point lying on the axis of rotation?

Discuss the addition of vector by rectangular component method?

Discuss the commutative property of addition of vectors ?

Two vectors have unequal magnitude.Can their components be equal in magnitude?

Define Physical quantities & Magnitude?

A point object acted on by forces 4N, 5N, and 6N is in equilibrium. If 6N force is removed, what is the resultant force on the object ?

Is it possible to add a vector quantity to a scalar quantity?

ICS Part 1 Physics Chapter 2 Short Questions Test - Set 4

Define and explain the scalar product?

Define equilibrium ?

Why can a body not rotate about its centre of gravity under the action of its weight?

Can a body rotate about its center of gravity under the action of its weight?

Two vectors have unequal magnitude. Can their sum be zero? Explain.

State condition of rotational equilibrium.

Define null and equal vectors.

Define null vector and component of a vector.

Explain why do buses and heavy trucks have large steering wheels ?

The gravitational Force acting on a satellite is always directed towards the centre of the earth?

ICS Part 1 Physics Chapter 2 Short Questions Test - Set 5

Define null and equal vectors.

Define torque.Write its units and dimensions,

The vector sums of three vectors give a null vector. What can be orientation of the vectors?

The gravitational Force acting on a satellite is always directed towards the centre of the earth?

Define the term unit vector.

Define Physical quantities & Magnitude?

Define and explain the scalar product?

A point object acted on by forces 4N, 5N, and 6N is in equilibrium. If 6N force is removed, what is the resultant force on the object ?

Discuss the condition of equilibrium?

Two vector of magnitude 10 each making angle 180^oWith each other.Find the magnitude of their resultant.

Two vector of magnitude 10 each making angle 180^oWith each other.Find the magnitude of their resultant.

When body is in .
Translation equilibrium
Rotational equilibrium

Two vector of magnitude 10 each making angle 180^oWith each other.Find the magnitude of their resultant.