#### 11th Standard Physics English Medium Free Online Test Creative One Mark Questions with Answer Key

11th Standard

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Physics

Time : 00:10:00 Hrs
Total Marks : 10

10 x 1 = 10
1. Microscopic group of Physics dealt with the study of ____________.

(a)

classical physics

(b)

statistical mechanics

(c)

fluid mechanics

(d)

quantum physics

2. Retardation means:

(a)

decreases with time

(b)

increases with time

(c)

increases and decreases

(d)

decreases and increases

3. The unit of momentum is

(a)

kg m s-1

(b)

kg m2 s-2

(c)

kg m2 s-1

(d)

kg-1 m2 s-1

4. When is the speed of a moving body doubled?

(a)

its acceleration is doubled

(b)

its momentum is doubled

(c)

its kinetic energy is doubled

(d)

its potential energy is doubled

5. A metal ball of mass 2 kg moving with speed of 36 km/h has a head on collision with a stationary ball of mass 3 kg. If after collision, both the balls move as a single mass, then the loss in K.E. due to collision is

(a)

100J

(b)

140J

(c)

40J

(d)

60J

6. The 10, cation of the centre of mass of a sphere is at:

(a)

its top

(b)

its bottom

(c)

geometric centre

(d)

all the above

7. Three particles, each of mass m gram, are situated at the vertices of an equilateral triangle ABC of side I cm (as shown in the figure). The moment of inertia of the system about a line AX perpendicular to AB and in the plane of ABC, in gram-cm2 units will be

(a)

$\frac { 3 }{ 4 }$ml2

(b)

2 ml2

(c)

$\frac { 5 }{ 4 }$ml2

(d)

$\frac { 3 }{ 2 }$ml2

8. If net force acting on a body is zero, then the body is in

(a)

translational equilibrium

(b)

rotational equil ibrium

(c)

both (c) and (b)

(d)

none

9. A satellite is moving around the Earth with speed v in a circular orbit of radius r. If the orbit radius is decreased by 1% its speed will _______.

(a)

increase by 1%

(b)

increase by 0.5%

(c)

decrease by 1%

(d)

decrease by 0.5%

10. The modulus of rigidity of a liquid is _______.

(a)

zero

(b)

1

(c)

infinite

(d)

none of these