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

11th Standard

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Physics

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

10 x 1 = 10
1. The term used to mention study of macroscopic system to microscopic constituents is _____________.

(a)

unification

(b)

macrocosm

(c)

reductionism

(d)

microcosm

2. Kinematics deals with the motion of objects without taking____________into accounts.

(a)

mass

(b)

force

(c)

velocity

(d)

all the above

3. Spinning of the earth about its own axis is known as _______________.

(a)

linear motion

(b)

circular motion

(c)

curvilinear motion

(d)

rotational motion

4. A body of mass M moving with velocity V explodes into two equal parts. If one comes to rest and the other body moves with velocity v, what is the value of v?

(a)

V

(b)

$V/\sqrt { 2 }$

(c)

4V

(d)

2V

5. A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel. The lift starts moving upwards with an acceleration 1.0  m/s-2. If g = 10 ms-2, the tension in the supporting cable is _____________.

(a)

8600 N

(b)

9680 N

(c)

11000 N

(d)

1200 N

6. In an elastic collision ___________ is conserved

(a)

kinetic energy

(b)

momentum

(c)

both (a) and (b)

(d)

neither (a) nor (b)

7. A mass of 1 kg is thrown up with a velocity of 1.00 m/s. After 5 seconds, it explodes into two parts. One part of mass 400 g comes down with a velocity 25 m/s. The velocity of other part is (Take g = 10 ms-2)

(a)

40 m/s

(b)

40 m/s

(c)

100 m/s

(d)

60 m/s

8. A particle of mass m is circulating on a circle of radius r having angular momentum L then the centripetal force will be _______________.

(a)

L2 /mr

(b)

L2m/ r

(c)

L2 / mr3

(d)

L2 / mr2

9. Consider a system of two particles having masses m1 and m2 If the particle of mass m1 is pushed towards the mass centre of particles through a distance d, by what distance would be particle of mass m2 move so all to keep the mass centre of particles at the original position?

(a)

$\frac { m_{ 1 } }{ { m }_{ 1 }+{ m }_{ 2 } }$d

(b)

$\frac { { m }_{ 1 } }{ { m }_{ 2 } }$d

(c)

d

(d)

$\frac { { m }_{ 2 } }{ { m }_{ 1 } }$d

10. Rotational Kinetic energy of a body is ____________.

(a)

$\frac { 1 }{ 2 }$mr2

(b)

$\frac { 1 }{ 2 }$2

(c)

$\frac { 1 }{ 2 }$Iv2

(d)

$\frac { 1 }{ 2 }$2