Question # 1

If a convex lens is used as a magnifying glass, whcih lens will give higher magnification that has.

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Short size

Long focal length

Large size

Short focal length

When body acquires terminal velocity them its acceleration 'a' becomes.

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a = 0

a = g

a > 0

a < 0

According to first law of thermodynamics the quantity which is conserved.

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Force

Momentum

Energy

Power

An elevator is moving up with an acceleration equal to 'g' An apparent weight of the body in an elevator is.

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Zero

Equal to real weight

2 mg

3 mg

The product of time period and frequency is.

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Zero

1

2

3

the angular version of F= ma is

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L = 1w

pi = 1a

l = pi a

f = mv/t

A gas performs 10 J of work while expanding adiabatically. the change in its internal energy is.

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10 J

-10 J

100 J

-200 J

A spring of spring constant 10 N/m after loading that amplitude is 2m. Then the maximum P.E. is

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10 J

20 J

30 J

40 J

At constant temperature and pressure, if volume of given mass of a gas is doubled then density is.

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Doubled

1/4 original

1/2 of original

Unchanged

Teh uncertainty may occur due to

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Limitation of an instrument

Natureal variance of the object

Personal negligence

All of the above

If the tension a stretched string is made four times then the velocity of wave.

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Remains same

Is halved

Becomes twice

Becomes 4 times

If the pressure of a gas is doubled, then speed of sound is.

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Doubled

Become half

Not affected

Increases by four times

With increase of temperature, speed of sound.

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Remains constant

Becomes zero

Decreases

Increases

Time period of simple pendulum depends upon

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Mass of pendulum

Weight of pendulum

Length of pendulum

Shape of pendulum

Entropy remains constant.

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Isothermal process

Adiabatic process

Isochoric process

Isobaric process

The drag force increases as the speed of object

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Become zero

Decreases

Increases

Remains constant

Inertia may expressed in

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Kg

Newton

Watt

Joule

A ray of light is a line

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Parallel to wave front

Normal to wave front

Anti-parallel to wave

Any one of these

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