Question # 1

Work-energy principle states that work done on the body by applied force is equal to change in:

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Potential energy

Kinetic nergy

Linear momentum

None of these

When a conductor is moved across a magnetic field, the redistribution of charge sets up:

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Magnetic field

Electrostatic field

Electromagnetic field

All of these

None of these

The short distance between two points direction from its initial point to final point is called:

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Velocity

Displacement

Speed

Distance

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

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circular

elliptical

cycloid

straight line

A digital system deals with quantities or variables which have

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only one state

only two discrete states

three discrete states

four discrete states

When relatively simple molecules are chemically combined into massive molecules, the reaction is called:

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Fission reaction

Fusion reaction

Polymerization

Any of these

None of these

How much time, theα-particle more massive than an electron

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600

7000

5000

15000

The size of the domain is such that they can contain

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10²to 10⁴atoms

10⁴ to 10⁸atoms

10⁸to 10¹²atoms

10¹²to 10¹⁶atoms

The phase determines the

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displacement

amplitude

frequency

state of motion of vibrating body

To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance

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5.07 pF

50 pF

0.507 pF

507 pF

Some charge is being given to a conductor. Then its potential

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Is maximum at surface

Is maximum at centre

Is remain same throughout the conductor

Is maximum somewhere between surface and centre

Newtons laws are suitable, for as compared to velocity of light

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Low speed

Very low speed

Very high speed

None of these

A single converging lens placed close to the eye to see magnified image is called

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A telescope

Compound microscope

Simple microscope

None of these

Young's modulus for bone is

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10

15

20

25

The energy due to all the fossil fuels on the Earth is so small that, the energy reaching Earth in just days of sunlight which is

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5 days

10 days

30 dyas

60 days

Stoke's law holds for bodies of the shape

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Spherical

Rectangular

Oblog

All of these

Which of the following gives volts as its unit

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Current/resistance

Power x current

Rate of flow of charge

emf of a cell

The conductivity of super conductor at critical temperature becomes

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Zero

1

Infinite

Negative

Range of a projectile is R.when the angle of projection is 30°.Then the value of the other angle of projection for the same range is:

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45°

60°

50°

40°

Which one of the following is nearly monochromatic

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Light from candle

Light from simple lamp

Light from sodium lamp

Light from sun

Two circular rings have their masses in the ratio 1 : 2 and diameter in ratio 2 : 1 the ratio of their moment of inertia is

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1:4

4:1

2:1

√2:1

You are traveling in a car during a thunder storm. In order to protect yourself from lightning you would prefer to

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Remain in car

Take shelter under tree

Get on and lie flat on the ground

Touch the nearest electric pole

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