Physics Test 08

Total Questions: 25

1 - Newton's first law of motion is valid in the absence of

A ) force
B ) Net force ✅
C ) Friction
D ) Momentum

2 - Inertia depends upon

A ) Force
B ) Net force
C ) Mass ✅
D ) Velocity

3 - A body jumps out a moving bus. There is danger for him to fall

A ) Towards the moving bus
B ) Away from bus
C ) In the direction of motion ✅
D ) Opposite to the direction of motion

5 - The mass of a body

A ) Decreases when accelerated
B ) Increase when accelerated
C ) Decreases when moving with high velocity
D ) None of these

6 - Which of the following is the unit of momentum?

A ) Nm
B ) Kgms-²
C ) Ns ✅
D ) Ns-¹

8 - When horse pull a cart, the action is on the

A ) Cart
B ) Earth ✅
C ) Horse
D ) Earth and cart

9 - Which of the following material lowers fraction?

A ) Water
B ) Fire marble power
C ) Air
D ) Oil ✅

10 - How much acceleration is produced by a force of 100N in mass of 50kg?

A ) 0.5 ms-²
B ) 20 ms-²
C ) 0.05 ms-²
D ) 2ms-² ✅

12 - Coefficient of friction is equal to

A ) F2 + R
B ) F2R
C ) Ps/R ✅
D ) R/F2

13 - The weight of a body is 147N. Its mass will be when g=10ms-².

A ) 1.47Kg
B ) 14.7Kg ✅
C ) 0.147 Kg
D ) 147Kg

14 - Complete equation pf-p1/1 =____

A ) F ✅
B ) s
C ) t
D ) m

15 - 1N is equal to

A ) 1kgms-¹
B ) 1kgms-² ✅
C ) 1kgm-²s
D ) 1kgm-¹s-²

16 - Coefficient of friction b/w glass and glass is

A ) 0.9 ✅
B ) 1.0
C ) 0.8
D ) 0.2

18 - Product of mass and velocity of a body is called

A ) Torque
B ) Force
C ) Work
D ) Momentum ✅

21 - The unit of momentum is

A ) Kgms-²
B ) Nm
C ) Ns ✅
D ) ns-¹

22 - The centripetal acceleration is inversely proportional to

A ) Mass
B ) Velocity
C ) Radius ✅
D ) Mass and radius

23 - Equation of momentum is

A ) P= mv ✅
B ) P= (mv)²
C ) P= mv²
D ) P= m/v

25 - Rate of change of momentum is

A ) Torque
B ) Mass
C ) Force ✅
D ) Distance