Question # 1

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

Stoke's law holds for bodies having.

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Spherical shape

Oblong shape

Rectangular shape

All shapes

The location of near point changes with

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Age

Size of the eye

Sharpness of the eye

None of these

The entropy of the universe with passage of time is.

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Increases

Decreases

Remain constant

Increases and decreases

The ability of reveal the minor details of an object under examination is called.

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Resolving power

Magnification

Scattering

Reflection

Average translational K.E. of molecules for an ideal gas is given as

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1/2 KT

KT

2/3 KT

3/2 KT

A bullet shot straight up, return to its starting point in 10 sec. Its initial speed was

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9.8 ms-1

24.5 ms-1

49 ms-1

98 ms-1

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

the final image obtained by astronomical telescope is.

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Erect

Virtual

Magnified

All of these

For maximum range the angle of projection must be

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30^o

45^o

60^o

90^o

The resultant of two vectors having magnitude 10 N and 8 N Can not be

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2 N

9 N

18 N

20 N

In S.H.M, the acceleration of the body is directly proportional to

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Weight of body

Applied force

Amplitude

Displacement

When one mirror of a Michelson interferometer is moved a distance of 0.5 mm, 2000 fringes and observed, The wavelength of light used is.

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5000 m

50000 A^o

500 cm

2000 A^o

In case of point source the shape of wave front is

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Circular

Spherical

Elliptical

Square

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

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a = 0

a = g

a > 0

a < 0

The focal length of a concave lens is always

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+ve

-ve

Zero

None of these

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

Speed of sound in copper is

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38000 ms-1

3600 ms-1

3500 ms-1

3400 ms-1

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