Question # 1

Newton published laws of motion in his famous book "principia" in

Choose an answer

1867

1667

1676

1687

(CRO) Cathode ray oscilloscope is a device used for high speed

Choose an answer

velocity

graph plotting

time-velocity

none of these

The frequency of free vibrations is known as

Choose an answer

free frequency

forced frequency

natural frequency

un-natural frequency

If we plot graph between potential difference (V) and current (I) obeying ohm's law, it will give us

Choose an answer

parabola

straight line

hyper bola

ellipse

A typical rocket ejects the burnt gases at speeds over

Choose an answer

400 ms^-1

40000m s^-1

40000 ms^-1

60000 ms^-1

A 2 kg block is held 1 m above floor for 50 seconds. The work done is:

Choose an answer

Zero

10.2 J

100 J

980 J

In magnet-coil experiment, emf can be produced by

Choose an answer

Keeping the coil stationary and moving the magnet

Keeping the magnet stationary and moving

Relative motion of the loop and magnet

Any one of above

All above

The SI unit of conductivity is

Choose an answer

ohm-m

ohm^-1m^-1

ohm-m^-1

ohm^-1m

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

Choose an answer

6 ohm

4 ohm

zero ohm

1.33 ohm

In an adiabatic process the work is done at the expense of the

Choose an answer

energy supplied to the system

energy gained from the surroundings

internal energy

none of them

The SI unit of flux density is.

Choose an answer

Tesla

Weber

Gaun

Weber/meter

When an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:

Choose an answer

Zero

Its average velocity

Its angular displacement

None of these

Angular frequency 'w' is basically a characteristics of

Choose an answer

linear motion

circular motion

both of them

none of them

Substances which break just after the elastic limit is reached, are known as

Choose an answer

brittle substances

ductile substances

plastic substances

elastic substances

In Bernoulli's theorem the relation between velocity and pressure is

Choose an answer

Inverse

Direct

None of the above

Both a and b

In flesh, light element like carbon, hydrogen and oxygen predominate. Three elements allows ______ amount of incident X-ray to pass through them

Choose an answer

Small

Greater

Equal

Sometimes

The liquid which conduct current is known as

Choose an answer

heating effect

chemical energy

electrolyte

ohm's law

R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes

Choose an answer

2V

3V

0.5V

V

The CRO is used for displaying the waveform of a given

Choose an answer

current

voltage

both of them

none of them

If an amount of heat enters the system it could

Choose an answer

decrease the internal energy

not change the internal energy

increase the internal energy

none of them

Electromagnetic waves transport:

Choose an answer

Energy only

Momentum only

Both A and B are correct

None of is correct

A high temperature, the proportion of shorter wavelengths radiation, emitted by the body

Choose an answer

decreases

first increases then decreases

increases

any one of them

Crystal of germanium or silicon in its pure form at absolute zero acts as:

Choose an answer

A conductor

A semiconductor

an insulator

Both (A) and (C)

Both (A) and (B)

The conventional current in a circuit is defined as " current which passes from a point at higher potential to a point at lower potential as if it represent a movement of

Choose an answer

negative charges

positive charges

protons

electrons

The solids which has structure in-between order and disorder are called

Choose an answer

amorphous solids

polymeric solids

crystalline solids

all of them

Which of the following waves are more energetic

Choose an answer

radio waves

infrared waves

ultraviolet

γ-rays

Referring to above figure, due to change in current in the coil P, the change in magnetic flux:

Choose an answer

Is associated with coil P

Is associated with coil S

Causes an induced current is coil S

All of these

None of these

Centripetal acceleration is also called ________ acceleration

Choose an answer

Tangential

Radial

Angular

None of these

Selenium is:

Choose an answer

An insulator

A conductor

Both A and B

Excellent conductor

None of these

Position and momentum of a particle cannot both be measured simultaneously with perfect accuracy. This is the statement of

Choose an answer

photoelectric effect

pair production

Compton effect

uncertainty principle

A coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when:

Choose an answer

The coil is distorted

The coil is rotated

The coil is neither distorted nor rotated

Both A and B

None of these

More Classes

Other Links

ECAT Pre General Science Physics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer