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

Question # 1

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 # 2

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 # 3

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?

Ans 1: The two vectors of equal magnitudes are combined to give a resultant vector of same magnitude when must be oriented at an angle of 120⁰ With each other.

Question # 4

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 # 5

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

Ans 1: We can add two or more than two vectors by geometrical method or graphical method to get their resultant vector. we use "Head-to-Tail rule for addition of vectors by graphical method or geometrical method.
The following steps must be followed to add vectors buy head-to-tail rule:
1. Select a suitable scale for the representation of given vectors
2. Draw the 1st vector according to the selected scale in the given direction
3. Draw the second vector according to the selected scale in the specified direction such that its tail touches the head of the first vector.
4. Now draw the 3rd vector according to the selected scale in the specified direction such that its tail touches the head of the second vector
5. Continue the above process for given number of vectors.
6. For getting the resultant vector, combination the tail of the first vector.
7. Measure the length of R which will given its magnitude.
8. To determine the direction of R measure the angle of R with respect to positive X-direction in anti clock wise sense.

Question # 6

Define torque.Write its units and dimensions,

Ans 1:

Question # 7

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

Ans 1:

Question # 8

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

Ans 1:

Question # 9

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 # 10

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.

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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

Define the term unit vector.

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

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?

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

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

Define torque.Write its units and dimensions,

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

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

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

State condition of rotational 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

Define the term unit vector.

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

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?

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

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

Define torque.Write its units and dimensions,

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

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

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

State condition of rotational equilibrium.

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

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

Define unit vector?

What are rectangular components of a vector?

What are coplanar and concurrent forces?

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

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

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

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

Discuss the addition of vector by rectangular component method?

Give two conditions of equilibrium.

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

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 scalar and vector quantities?

Define torque.Write its units and dimensions,

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

Explain rectangular coordinates system.

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

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

Give two conditions of equilibrium.

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

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

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

Differentiate between static and dynamic equilibrium.

Define unit vector?

Define null vector and component of a vector.

Give two conditions of equilibrium.

Explain how cranes are able to light very heavy load without toppling ?

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

When body is in .Translation equilibriumRotational equilibrium

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

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

Explain with the help of an example what is the rang of possible values of the resultant of two vector ?

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

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

What are coplanar and concurrent forces?

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

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

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

What is difference between moment arm and moment of force?

Discuss, how a vector is represented?

What are rectangular components of a vector?

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

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.