Question # 1

In AND gate, the output is 1 if:

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Both inputs are 0

Both inputs are 1

Only one input is 0

Both (A) and (B)

Both (A) and (C)

The general theory of relativity treats problems involving

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inertial frame of references

accelerating frame of references

both of these

none of these

In a cubic crystal, All solids meet at:

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60^o

90^o

109^o

30^o

10^o

SI unit of frequency is

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second

hertz

revolution

vibrations/sec

Velocity is a

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scalar quantity

vector quantity

constant quantity

none of them

In the equilibrium state, the potential difference between two ends of the conductor moving across a magnetic field is called:

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Motion emf

Electrostatic emf

Induced emf

Both A and B

Both A and C

The value of resistivity is the least for:

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Copper

Aluminimum

Silver

Tungsten

Iron

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)

OP-AMP has the following input terminals

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one

two

three

four

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

The induced current in the loop can be Increased by

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Using a stronger magnetic field

Moving the loop faster

Replacing the loop by a coil of many turns

All above

Both A and B

Momentum is a parameter associated with

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wave motion

particle motion

neither wave nor particle motion

none of these

For making cooking utensils, which of the following pairs of properties is most suited?

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Low specific heat and high conductivity

Low specific heat and low conductivity

High specific heat and high conductivity

High specific heat and low conductivity

The velocity of a body at any instant of its motion is known as

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average velocity

instantaneous velocity

uniform velocity

none of them

In the compton's effect, it is found that the wavelength of incident x-rays is

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greater than the wavelength of scattered x-rays

equal to the wavelength of scattered x-rays

less than the wavelength of scattered x-rays

any one of these

The current sensitivity of the galvanometer is

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C/BAN

BAN/C

CAN/B

CBN/A

When a person jumps off the ground, the reaction force of the ground is

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greater than the weight of the person

smaller than the weight of the person

equal to the weight of the person

zero

Mass of neutron is

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1.67 x 10^-31kg

1.67 x 10^-27kg

9.1 x 10^-31kg

1.67 x 10^-19kg

Compton derived an expression to find compton shift by applying to the process, the law of conservation of:

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Energy only

Momentum only

Mass only

Charge only

Both (A) and (B)

Hotness and coldness of an object is represented in terms:

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Heat

Temperature

Chemical energy

None of these

In case of mechanical waves, we study the motion of

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a single particle

collection of particle

any one of them

none of them

When a constant potential difference is applied across the conductor, the drift velocity of electrons:

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Increases

Decreases

Remains the constant

Either of these

None of these

At high speed, fluid friction _____ and fuel consumption ___,:

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Increases, decreases

Increases, increases

Decreases, increases

None of these

An object thrown upward with an initial velocity at certain angle with the horizontal and moving freely under the action of gravity is called

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a rocket

an aeroplane

a projectile

a ballon

Radiation detector are used to

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measure intensity of radiation

measure energy of radiation

difference between different types of radiation

all the above

The magnitude of induced emf depends upon the:

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Rate of decrease of magnetic field

Rate of change of magnetic field

Rate of increase of magnetic flux

Constancy of magnetic field

None of these

The mass of the object is a quantities measure of its

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speed

velocity

acceleration

inertia

When thorium nucleus emits aβ-particle, the daughter nucleus is called:

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Protactinium

Actinium

Uranium

Radium

Redon

A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is

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120 x 10.8 N

180 N

720 N

360 N

As the current flow through the wire:

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It generates heat in the wire

It produces sound in the wire

Resistance of the wire decreases

Voltage across the ends is increased

None of these

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

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circular

elliptical

cycloid

straight line

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