Question # 1

Electric intensity at a place due to a charged conductor is a

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Scalar quantity

Vector quantity

Semi vector and semi scalar

Dimensionless quantity

Both A and D are true

When angular acceleration is positive, the body rotates:

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Slower

Slowest

Faster

None of these

A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body is:

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0°

30°

60°

90°

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

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applied force

momentum

restoring force

none of them

Electromagnetic radiation or photons interact with matter in

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two distinct ways

three distinct ways

four distinct ways

five distinct ways

Which of the following can become a good permanent magnet

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iron

steel

both of them

none of them

It is possible to recognize a person by hearing his voice even if he is hidden behind a solid wall. This is due to the fact that his voice

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Has a definite pitch

Has a definite quality

Has a definite capacity

Can penetrate the wall

Motional emf is called motional:

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Electromagnetic force and is measured in newtons

Electromotive force and is measured in volt

Electromotive force and is measured in newtons

Electromagnetic force and is measured in volts

None of these

The magnifier forms a virtual image of the object at:

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Least distance of distinct vision

Much farther than the least distance

Both A and B are correct

None of these

When the shear stress and shear stain are involved, then their ratio is called

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Young's modulus

Bulk modulus

Shear modulus

all of them

The strength of magnetic field around the current conductor is

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Smaller near the conductor

Greater near the conductor

Greater at the large distance from the conductor

Constant near and away from the conductor

The colour of light is determined by is

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Wavelength

Frequency

Velocity

Amplitude

In a photocell, sodium and potassium emit electrons for:

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Visible light

Infrared light

Ultraviolet light

All of these

The deformation measured in terms of some twisting angle due to action of stress is known as

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Stress

Linear stress

Compressive stress

Shear stress

In Young's double slit experiment fringe width (or fringe spacing) depends

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inversely on wavelength

directly on wavelength

directly on square of wavelength

inversely on square of wavelength

Moment of inertia of a sphere is

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1/3 mr²

3/4 mr²

4/5 mr²

2/5 mr²

A wire is stretched to double of its length.The strain is

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2

1

Zero

0.5

When the object is closer to eye or near point, the image becomes

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Sharp

Clear visible

Blurred

None of these

The SI unit of stress is same as that of.

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Momentum

Pressure

Force

Length

The units of the temperature coefficient of resistant are

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ΩK^-1

K^-1

ΩK

(ΩK)^-1

The electrons occupying the conduction band are known as

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conduction electrons

free electrons

both of them

none of them

A small metallic sphere is dropped in a long jar of honey, it will move as

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Float in jar

It will move with g

Fall with acceleration less than g

Grain terminal velocity

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