Question # 1

The mean kinetic energy of gas is at.

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0 ^oC

-273 ^oC

100 K

100 ^oC

Image formed by a concave lens is

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Real

Virtual

Erect

None of these

First law of thermodynamics can be defined by the equation

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The unit of rotational K.E. is

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rAD/SEC

Js

J

Kgm2

The product of time period and frequency is.

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Zero

1

2

3

In transverse waves the particles of medium vibrate

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Along the direction of wave

Opposite to direction of wave

Perpendicular to direction of wave

Slowly

Two vector can be added by simple arithmetical method when they are at an angle of.

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120^o

90^o

0^o

45^o

When the amplitude of a wave become double, its energy becomes

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One half

Two times

Three times

Four times

Angle between ray of light and wave front is

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0 ^o

60 ^o

90 ^o

120 ^o

The resultant of two forces 30 N and 40 N acting parallel to each other is.

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30 N

40 N

70 N

10 N

The formula for the power is

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P= W/d

P=W/v

P=W/t

P=Wt

A force of 10 N acts on a body of mass 5 kg in one second. The change in its momentum will be.

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10 kgms-1

50 kg ms-1

2 kg ms-1

20 kg ms-1

Kg ms-1 can also be written as

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Nm

Ns

Ns-1

Js

The value of solar constant.

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1.4 kW m-2

1.0 kW m-2

1.6 kW m-2

2 kw m-2

The terminal velocity of a droplet falling down under gravity is directly proportional to the square of

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Its density

Its radius

Its viscosity

Its elasticity

The motion of gas molecules is

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In the same direction

Random

Walls of container

Opposite to each other

For a gas obeying Boyle's Law, if the pressure is doubled, the volume becomes.

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Double

Three fold

One half

Remains the same

In case of point source the shape of wave front is.

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Plane

spherical

Circular

Eliptical

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11th Class Part 1 Physics Test Online MCQs With Answers

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