Question # 1

The formula of centripetal acceleration is

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Han discovered uranium fissionin

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1940

1938

1935

1939

For normal adjustment what is the length of astronomical telescope if focal lengths of astronomical telescope if focal lengths of objective and eye piece are 100 cm 20 cm respectively.

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10 cm

20 cm

5 cm

120 cm

International Telecommunication satellite

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4,6,8 and 10 Hz

4,6,11 and 14 GHz

4,6,8 and 12 Hz

4,8,11 and 16 GHz

The SI unit of angular momentum is

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J.S-2

J.S-1

J.S

J.m

Total change in momentum of an isolated system is

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Always (+) ve

Always (-) ve

Has maximum value

Zero

The number of significant figure in 8.80 x 10⁶ kg is

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1

3

6

5

Two tuning forks of frequencies 240 Hz and 243 Hz are sounded together, the number of beats per second is.

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Zero

2

3

4

Which is the process in which temperature of the system remains constant.

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Adiabatic process

Isochoric process

Isothermal process

Isobaric process

As we go from pole to equator of earth, the value of 'g'

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Increase

Decrease

Remain constant

Zero

Which is unimportant in describing the satellites orbit.

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Distance of satellite from earth's center

Gravitational constant G

Mass of satellite

Mass of earth

If the temperature of sink is absolute zero then the efficiency of heat engine engine should be.

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100%

50%

Infinite

zero

The kinetic energy of molecules of an ideal gas at absolute zero is

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Very low

Very high

Zero

First increases then decreases

The equations of motion hold good for

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Variable acceleration

Uniform acceleration

Centripetal acceleration

All of these

Which material has maximum viscosity

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Glycerin

Plasma

Methanol

Water

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

The difference between two molar capacities is equal to.

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Plank's constant

General gas constant

Molar gas constant

Boltzmann constant

Work is negative when angle between F and d is

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45^o

₀^o

90^o

180^o

Which of the following is not directed along the fixed axis of rotation.

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Angular displacement

Angular momentum

Centripetal acceleration

Angular acceleration

The time rate of change of angular displacements called.

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Linear velocity

Linear speed

Angular velocity

Angular speed

This is used for

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Co-efficient of friction

Co-efficient of expansion

Co-efficient of viscosity

Co-efficient of contraction

If the object is at 5 cm from the lens of simple microscope than its magnifying power will be.

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5

10

15

25

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