Physics – Class 11 Mock Test 3

10%

Question 1 of 10

1. What is the correct expression for Work?

W = E

W = E/t

W = P/t

W = F * ds

Question 1 of 10

Question 2 of 10

2. If a body returns to its original state of equilibrium after giving it a small displacement, the equilibrium is known as ______

Simple equilibrium

Unstable Equilibrium

Stable equilibrium

Neutral Equilibrium

Question 2 of 10

Question 3 of 10

3. The first condition of equilibrium of a body is ___

Relative difference of forces should be zero

Sum of all moments on a body should be zero

Sum of the initial and final force should be zero

Sum of all force on a body should be zero

Question 3 of 10

Question 4 of 10

4. Why do we not experience any leaning when a train takes a turn?

Because of large turning radius

Because the train does not turn

Because the train is powerful

Because the driver is smart

Question 4 of 10

Question 5 of 10

5. At which position in vertical circular motion is the tension in the string minimum?

When the string is horizontal

At the lowest position

At an angle of 35° from the horizontal

At the highest position

Question 5 of 10

Question 6 of 10

6. The work done by a body while covering a vertical height of 5m is 50 kJ. By how much amount has the energy of the body changed?

50 kJ

-50 kJ

25 kJ

10 kJ

Question 6 of 10

Question 7 of 10

7. Two forces act on a ball. One of the forces is positive and acts towards right, the other one acts towards left and is ______

Having a magnitude of 5 N

Positive

Neutral

Negative

Question 7 of 10

Question 8 of 10

8. Inertia is _____

Property of mass to remain unchanged

Tendency of mass to accelerate

Property of mass to accelerate

Property of mass to change continuously

Question 8 of 10

Question 9 of 10

9. A body of weight 20 N, mass 2 kg is moving in vertical circular motion with the help of a string of radius 1 m and with a velocity of 5 m/s. What is the tension in the string when is horizontal?

30 N

50 N

25 N

20 N

Question 9 of 10

Question 10 of 10

10. A ball is moving with a constant velocity. After some time, it collides with a wall. Which one of the following remains conserved except momentum?

Power

Force

Displacement

Energy

Question 10 of 10