Question # 1

The internal energy of a system does not depend upon the

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initial state of the system

final state of the system

path

none of them

When two waves with same frequency and constant phase difference phase difference interfere

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There is a gain of energy

There is a loss of energy

The energy is redistributed and the distribution changes with time

The energy is redistributed and the distribution remains constant with time

The charge carries in the electrolyte are:

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Positive ions

Negative ions

Either (A) or (B)

Both (A) and (B)

Neither (A) nor (B)

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

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50

100

150

200

250

A transistor has:

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One region

Two regions

Three regions

Four regions

None is correct

A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?

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Electric potential at the surface of the cube is zero

Electric potential within the cube is zero

Electric filed is normal to the surface of the cube

Electric filed varies within the cube

First law of thermodynamics is consequence of conservation of

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Work

Energy

Heat

All of these

A virtual image is formed when object is placed:

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Within focal length of a convex lens

Near the focal point of a concave lens

Both A and B

Away from 2F of a convex lens

The most common source of alternating voltage is:

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Motor

Transformer

AC genrator

Both (A) and (C)

Both (A) and (B)

Selenium is:

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An insulator

A conductor

Insulator in the dark and becomes conductor when exposed to light

Conductor in the dark only

None of these

In SHM, there is always a constant ratio between displacement if body and its:

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Velocity

Period

Mass

Acceleration

In an interference pattern of Ypung's double Slit (YDS) experiment:

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Bright fringes are wider than dark fringes

Dark fringes are wider than bright fringes

Both dark and bright fringes are of equal width

Central fringes are wider than the outer fringes

The effect of applying a force on a moving body is to change

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its direction of motion only

its speed of motion only

both the direction and speed of motion

its inertia only

For incident angles equal or greater than the critical angle the glass air boundary will act as a

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Convex mirror

Concave mirror

Mirror

None if them

Semiconductor materials have the conductivities generally lies between

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10^-5 to 10^-6 (Ωm)^-1

10^-6 to 10^-4 (Ωm)^-1

10^-7 to 10^-3 (Ωm)^-1

None of these

The coordinate axes are those in which lines are drawn

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Parallel

Perpendicular

At right angle

All of them

A unit set is the smallest basic structure which is:

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One dimensional

Two dimensional

Three dimensional

Four dimensional

None of these

As the droplet accelerates the net force acting on it is

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Increase

Decreases

Zero

None of these

A force of 0.01 N is exerted on a charge 1.2 x 10^-5C at a certain point The electric field at that point is

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1.2 x 10⁴N/C

8.3 x 10²N/C

8.3 x 10^-2N/C

The wave nature of light was proposed by

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Einstein

Maxwell

Huygen

Newton

A particle is moving along a circular path of radius 5 m with uniform speed 5 m/sec what will be the magnitude of centripetal acceleration when the particle completes half revolution

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10π m/sec²

5 m/sec²

10/π m/sec²

Zero

State the physical quantity represented by [ML²T^-2K^-1] where K is represents the unit temperature

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Thermal capacity of the body

Thermal conductivity

Specific thermal capacity

Entropy

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