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

Question # 1

Write two examples of vector product.

Ans 1:

Question # 2

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 # 3

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 # 4

Define and explain vector product ? (or) Cross Product.

Ans 1:

Question # 5

What is the minimum number of unequal vector in to a null vector?Explain

Ans 1: The minimum number of unequal vector to result in to a null vector must be three. If we add three vector of unequal magnitude in such a way that they forms the sides of a triangle, then their resultant must be zero.
In the given figure three vectors A, B, and C are added according to head to tail rule and they form the side of a triangle. Now for getting their resultant, we will combine the tail of A with the head of C which already coincides each other. Thus we get a null vector or zero vector as a resultant
R= A+B+C = 0

Question # 6

Define the following?
Parallel vectors
Equal vectors
null vectors
Anti parallel vectors
Negative of a vectors

Ans 1: Parallel Vectors:Vectors are said to be parallel to each other if they are acting in the same direction.
Anti Parallel Vectors:Vectors are said to be anti parallel to each other if they are acting in opposite direction.
Equal vectors:Two vectors are said to be equal, if they have the same magnitude and same direction.
Negativeof a vector:Negative of a vector is that vector whose magnitude is the same to that of the given vector but opposite in direction.
Null Vector:A vectors whose magnitude is zero is known as null vector.

Question # 7

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 # 8

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 # 9

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 # 10

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.

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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

Write two examples of vector product.

Define Physical quantities & Magnitude?

State condition of rotational equilibrium.

Define and explain vector product ? (or) Cross Product.

What is the minimum number of unequal vector in to a null vector?Explain

Define the following?Parallel vectorsEqual vectorsnull vectorsAnti parallel vectorsNegative of a vectors

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

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

Discuss the multiplication of a vector by a number?

Discuss the condition of equilibrium?

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

Write two examples of vector product.

Define Physical quantities & Magnitude?

State condition of rotational equilibrium.

Define and explain vector product ? (or) Cross Product.

What is the minimum number of unequal vector in to a null vector?Explain

Define the following?Parallel vectorsEqual vectorsnull vectorsAnti parallel vectorsNegative of a vectors

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

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

Discuss the multiplication of a vector by a number?

Discuss the condition of equilibrium?

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

Define the following?Parallel vectorsEqual vectorsnull vectorsAnti parallel vectorsNegative of a vectors

Under what circumstances would a vector have components that are equal in magnitude?

What is difference between moment arm and moment of force?

Discuss, how a vector is represented?

What are rectangular components of a vector?

Define and explain position vector ?

Define unit vector.How we find it?

Define equilibrium ?

DIscuss the addition of vectors by graphical Method or geometrical Method?

Define and explain the resolution of a vector ?

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

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 ?

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

Discuss the commutative property of addition of vectors ?

Discuss the condition of equilibrium?

Define the term unit vector.

Define null vector and component of a vector.

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

How would the two vectors of the same magnitudes have to be oriented,if they were to be combined to give a vector of the same magnitude?

Define and explain vector product ? (or) Cross Product.

Differentiate between static and dynamic equilibrium.

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

Explain rectangular coordinates system.

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

Under what circumstances would a vector have components that are equal in magnitude?

Discuss the addition of vector by rectangular component method?

Define scalar and vector quantities?

Define position vector and resultant vector.

Give two conditions of equilibrium.

Can you add zero to a null vector?

Write two examples of vector 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 ?

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

Discuss the multiplication of a vector by a number?

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

Explain rectangular coordinates system.

Define equilibrium ?

Mention the criterion for positive and negative torque.

What is difference between moment arm and moment of force?

How would the two vectors of the same magnitudes have to be oriented,if they were to be combined to give a vector of the same magnitude?

Discuss the commutative property of addition of vectors ?

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

Define the following?
Parallel vectors
Equal vectors
null vectors
Anti parallel vectors
Negative of a vectors

Define the following?
Parallel vectors
Equal vectors
null vectors
Anti parallel vectors
Negative of a vectors

Define the following?
Parallel vectors
Equal vectors
null vectors
Anti parallel vectors
Negative of a vectors