Question # 1

Particles have the mass smallest of following is

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Electron

Proton

Neutron

Quark

The energy is found from Einstein's mass energy relation is called

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binding energy of electron

binding energy of proton

binding energy of neutron

binding energy of nucleus

Physics deals with the study of

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Matter

Energy

Both of them

Human Body

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

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1 : 2

4 : 1

1 : 4

2 : 1

The perpendicular distance from the axis of rotation to the line of action of force is called:

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Moment arm

Moment of a force

Torque

Non of these

Angular velocity is a:

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Scalar quantity

Vector quantity

Complex quantity

None of these

Radio telescope is used to gather information from

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Earth

Moon only

Far side of the universe

Sea water

Si units of time period is

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second

hertz

revolution

vibration/sec

An object undergoes S.H.M has maximum acceleration when its displacement form the means position

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maximum

zero

half of the maximum value

one third of the maximum value

Acceleration produced in a body by a force varies

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inversely as the applied force

directly as the applied force

directly as the mass of the body

none of them

If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by blue light of the same intensity

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Fringe width will decrease

Fringe width will increase

Fringe width will remain unchanged

Fringe will become less intense

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

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nuclear fission

nuclear fusion

man defect

radioactivity

Brownian motion increases due to

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Increase in size of Brownian particle

Increase in temperature of medium

Increase in density of medium

Increase in viscosity of medium

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

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increases

decreases

becomes zero

is conserved

Which of the following is not a unit of power:

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J-sec

Watt

N m/sec

Horsepower

The capacitance of a parallel plate capacitor depends upon

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Area of the plates

Separation between the plates

Medium between the plates

All of the above

A device which converts Electrical energy into mechanical energy is called as

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Transformer

Generator

Motor

All of these

Substances that flow easily have

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large coefficient of viscosity

small coefficient of viscosity

either of them

none of them

In equation F=ma, then mass 'm' is

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rest mass

variable mass

inertial mass

gravitational mass

Adiabatic change occurs when the gas

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expands

compressed

expands or compressed

expands or compressed rapidly

OP-AMP has the following input terminals

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one

two

three

four

The waves which propagate through the oscillations of material particles are known as:

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Mechanical waves

Electromagnetic waves

Any of them

None of them

An induced current can be produced by:

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Constant magnetic field

Changing magnetic field

Varying magnetic field

Constant electric field

None of these

When there is no relative motion between the magnet and coil, the galvanometer indicates:

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No current in circuit

An increasing current

A decreasing current

Either B or C

Silicon can be obtained from

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Lead

Uranium

An isotope of oxygen

Sand

The speed of sound in a medium depends on

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The elastic property but not on the inertia property

The inertia property but not on the elastic property

The elastic property as well as the inertia property

Neither the elastic property nor the inertia property

The mass of an object will be doubled at speed

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1.6 x 10⁸ms^-1

2.6 X 10⁸ms^-1

2.6 x 10⁷ms^-1

2.6 x 10⁹ms^-1

Self inducede e.m.f. is also called

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Motional e.m.f.

Thermistor

Electrostatic induction

Back e.m.f

Photocell is a device which converts

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chemical energy into electrical energy

electrical energy into light energy

heat energy into electrical energy

light energy into electrical energy

One kilogram of different substances contain

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same number of molecules

different number of molecules

may be same or different

none of them

When a water droplet falling freely through air, the drag force on water droplet increases with th

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decrease in speed

increase in speed

pressure

none of them

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