Question # 1

The force applied on unit area to produce any change in the shape, volume or length of a body is known as

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strain

elasticity

stretching

stress

In the formula P = N₀KT, N₀denotes:

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Number of molecules per unit per volume

Number of moles

Number of molecules

None of these

INTELSAT operates at frequencies 4, 6, 11, 14 having unit of:

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KHz

MHz

GHz

BHz

The bridge circuit of full wave rectification uses

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one diode

two diode

three diode

four diode

Which of the following does not have the same units:

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Work

Heat

Kinetic energy

Power

The reciprocal of decay constant λ of a radioactive material is:

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Frequency

Half life

Year

Mean life

None of these

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

If the distance of separation between two chares is increased, the electrical potential energy of the system will

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Increase

Decrease

May increase or decrease

Remain the same

According to the special theory of relativity

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mass and energy are same entities

mass and energy are same entities but interconverible

mass and energy are different entities but interconverible

mass and energy are different entities but non-interconveritble

Which quantity is important in stating the entropy of the system

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initial entropy

final entropy

change in entropy

none of them

Ball pen functions on the principle of

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Viscosity

Boyle's law

Gravitational force

Surface tnesion

Pico is the prefix for

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10^-10

10^-12

10^-15

10^-18

If drag force is given by F = krv what could be the SI units of k

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kgm²s^-1

kgm^-2s^-2

kgm^-1s^-1

kgms^-1

The torque is zero when the angle between F and r is

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90^o

180^o

270^o

0^o

When the velocity of a body is increasing, the acceleration produced is

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No acceleration produced

Negative acceleration

Positive acceleration

None of these

One second = ______.

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31 x 10^-8years

3.1 x 10⁸years

3.1 x 10^-8years

3.1 x 10^-18years

The law of thermodynamics which discusses the condition under which heat energy is converted into and equivalent amount of work is:

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1st

2nd

3rd

None of these

If the force applied is F and the velocity gained is v,then the power developed is

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F/v

v/F

FV

Fv²

If 'd' is the total displacement of the body in time 't' then the velocity during this interval t is

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Initial velocity

Variable velocity

Average velocity

None of these

If the unit of force and length are increased by four times then the unit of energy is increased by

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2 times

4 times

8 times

16 times

The body is in equilibrium when it is in a state of

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Accelerated motion

Uniform motion

Rest or uniform motion

None of these

Smaller the least count of the instrument more is the measurement

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Accurate

Precise

Accurate and precise

None of these

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