Question # 1

The wave form of SHM is.

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Sine wave

Cosine wave

Tangent wave

Square wave

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

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a = 0

a = g

a > 0

a < 0

The unit of rotational K.E. is

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rAD/SEC

Js

J

Kgm2

Wavelength of a wave for closed pipe having length 'l' in the fundamental mode is.

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2 l

1/2

4 l

l

According to Newton, sound travels in air under conditions of.

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Adiabatic

Isothermal

Isobaric

Isochoric

When hot and cold water are mixed, the entropy.

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Decreases

Increases

Remain constant

Zero

More details of an object can be seen with a microscope by using

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Green light

Red light

Yellow light

Blue light

A ball is thrown up vertically, it takes 3 sec to reach maximum height. Its initial velocity is.

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10 ms-1

12.2 ms-1

15 ms-1

29.4 ms-1

The basic units in system international units are

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Theree

Seven

Five

Two

The process followed by Newton for the determination of speed of sound in air is

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Adiabatic

Isothermal

Isobaric

Isochoric

The fundamental quanties which form basic for M.K.S system are

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Mass , Length , and time

Mass, acceleration and time

Mass, work and time

Velocity, force and time

System Intenational was established in

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1967

1960

1971

1940

The rate of change of angular velocity is called

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Angular velocity

Angular acceleration

Angular displacement

Angular speed

A vector is denoted by

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Light face

Bold face

Both a and b

None of these

The efficiency of any heat engine can never be

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+ve

100%

-ve

None of these

The area between velocity time graph and the time axis is numerically equal to.

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?Speed of object

Distance covered by the object

Average velocity of the object

Acceleration of the object.

Time taken by light to reach from moon to earth is

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1 min 20 sec

8 min 20 sec

3 min 20 sec

2 min 20 sec

In sonar we use

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Sound waves

Ultrasound waves

Microwaves

Radio waves

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

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Increase

Decrease

Remain constant

Zero

The location of near point changes with

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Age

Size of the eye

Sharpness of the eye

None of these

the length of simple pendulum of time period 1 second is

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2 m

1 m

0.5

0.25 m

the work done in isochoric process is.

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Constant

Variable

Zero

Depend upon condition

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