Question # 1

The formula of centripetal acceleration is

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When two waves having same frequency traveling in same direction combine, phenomenon is called

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Wave motion

Combination of waves

Interference

Diffraction

The equations of motion hold good for

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Variable acceleration

Uniform acceleration

Centripetal acceleration

All of these

According to Newton's formula, the speed of sound in air at STP is

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332 ,ms-1

340 ms-1

350 ms-1

280 ms-1

Work has dimension lime

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Torque

Momentum

Velocity

Power

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

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a = 0

a = g

a > 0

a < 0

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 internal energy of system does not depend on

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Temperature

Pressure

Path

Final and initial state

The force and torque are analogous to

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Velocity

Mass and weight

Moment of Inertia

Each other

Fringe spacing is inversely proportional to.

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Wave length

Slit separation

Distance between the slit and screen

Frequency of light

Direction of angular acceleration is always along

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x-axis

y -axis

z-axis

The axis of rotation

The difference between two molar capacities is equal to.

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Plank's constant

General gas constant

Molar gas constant

Boltzmann constant

Multimode step index fibre is useful for

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Long distances

Short distances

Better quality

Low price

An oil film on water surface shows colour due to.

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Diffraction

Interference

Polarization

Dispersion

Increase in speed of sound for 1 ^oC rise in temperature is.

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0.61 ms-1

0.61 cms-1

61 ms-1

6.1 ms-1

The device used to study the spectra from different sources of light is

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Telescope

Optical fibre

Spectrometer

Microscope

Angular displacement is

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Scalar quantity

Vector quantity

Basic quantity

None of these

If an object lies at focus point F in front of a converd lens, its image is formed at.

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2F

F

3F

Infinity

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