Question # 1

An oscillating mass-spring system produces

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Sound waves

Electromagnetic waves

Light waves

Periodic waves

Entropy of measure of.

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Internal energy of system

Order of system

Disorder of system

Potential energy of system

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

the locus of all pint in the same wave of vibration is called.

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Wave front

Diffraction

Interference

Polarization

The least distance of distinct vision for the normal eye is.

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15 cm

25 cm

125 cm

25 m

Apparent weight of a man is in upward accelerated lift will

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Increases

Decreases

Remain same

Increases then decrees

When temperature of source and sink of a heat engine becomes equal then the entropy change will be.

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zero

Minimum

Maximum

Negative

A body of mass 1.0 Kg dropped from the top of a tower of highest 50 m, what will be its K.E. 10 m below the top

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400 J

490 J

49 J

98 J

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

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

The potential energy to the molecules of an ideal gas is considered to be.

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Maximum

Zero

1/2 kx²

1/2 kx

All point of the rigid body rotating about a fixed axis do not have same.

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Angular acceleration

Angular speed

speed

Angular displacement

Two waves of same frequency and moving in the same direction produces.

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Interference

Diffraction

Beats

Stationary waves

When the projectile reaches the highest point of trajectory, the vertical component of velocity becomes.

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Small

Zero

Maximum

Vi cos

The units of magnifying power of microscope or telescope are.

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Metre

m^-1

dioptre

No unit

The space within which gravitational force acts on a body is called

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Electric field

Gravitational field

Magnetic field

Force field

When a particle is moving along a circular path its projection along the diameter executes

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Linear motion

Vibratory motion

Rotatory motion

SHM

The ballistic missiles are used only for

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Long range

Short range

Medium range

Constant range

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