Question # 1

When the total displacement is divided by total time taken, we get:

Choose an answer

Velocity

Average speed

Average velocity

None of these

The permeability of free space is measured in:

Choose an answer

Wb/Am

Wb A/m

Am/Wb

m/Web A

None of these

The life time of metastable state is equal to

Choose an answer

Life time of excited state

Greater than by excited state

Zero

Less than by excited state

A capacitor acts as an infinite resistance for

Choose an answer

AC

DC

Both AC and DC

Neither AC nor DC

CT scanning is the abbreviated name of

Choose an answer

Computed Technology

Computed Technique

Computed Technology

Computerized Technique

The decrease in velocity per unit time is called:

Choose an answer

Variable Acceleration

Average Acceleration

Retardation

None of these

The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as

Choose an answer

longitudinal waves

transverse waves

non-mechanical waves

none of them

Radioactivity

Choose an answer

is exhibited more by semiconductors in general

in exhibited more by the element when they are coupled

with other radioactive elements by a covalent bond

is an atomic property of radioactive elements

The unit of spring constant is:

Choose an answer

J-sec

Metre

Nm^-1

None of these

A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. the angle which the force makes with the direction of motion will be:

Choose an answer

60°

90°

30°

0°

Work is a scalar product of

Choose an answer

Force, Velocity

Velocity, Displacement

Force, Displacement

Force, Momentum

Which one is the least multiple:

Choose an answer

Pico

Femto

Nano

Atto

Deep water almost runs still when surface water flow in rivers. What does it explains

Choose an answer

Magnus effect

Equation of continuity

Surface energy

Bernoulli's equation

A rocket carries its own fuel in the form of

Choose an answer

liquid only

liquid or solid

liquid and solid

liquid or solid and oxygen

If we connect a A.C. volt meter to read A.C. voltage, It would read its:

Choose an answer

RMS value

Instantaneous value

Valued average over a cycle

Zero

Both (B) and (C)

if the field is directed along the normal to the area, then flux is:

Choose an answer

Maximum

Equal to zero

Equal to BA

Minimum

Both (A) and (C)

Work is a

Choose an answer

Scalar quantity

Vector quantity

Base quantity

None of these

An object moving through a fluid experiences a retarding force called a

Choose an answer

frictional force

terminal force

opposing force

drag force

Nuclei that have the same charge number but different mass number are called

Choose an answer

isotones

isomers

isotopes

isobars

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Choose an answer

F=eVB

F=e²V/B

F=e/VB

F=B²/ev

The photon of radio-waves has energy of about

Choose an answer

1 Me V

1 Ke v

10^-10e v

10¹⁰e v

On colliding in a closed container, the gas molecules

Choose an answer

Transfer momentum to the walls

Momentum becomes zero

Move in opposite directions

Perform Brownian motion

A railway engine (mass 10⁴kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is

Choose an answer

3,600 N

7,200 N

10,000 N

100,000 N

In case of point, source of light shape of wavefront is:

Choose an answer

Spherical

Cylindrical

Plane

None of these

Examples of moderators used in a fission reactor is/are:

Choose an answer

Water

Heavy water

Carbon

Hydrocarbon

All of these

The useful unit of angular replacement in SI unit is:

Choose an answer

Degree

Revolution

Radian

Metre

If a force of 0.05 N produces an elongation of 20 mm in a string, then its spring constant will be:

Choose an answer

250 N m^-1

25 N m^-1

2.5 N m^-1

None of these

The total work done in moving the body up and then down through the same height in a gravitational field is equal to:

Choose an answer

mgh

Its wight

Weight X height

Zero

The study of fluid in motion basically involves law of conservation of:

Choose an answer

Mass

Energy

Change

Both A and C

Both A and B

Coulomb force, when any material medium is placed between two charges

Choose an answer

Increases

Decreases

Remain unchanged

None of these

A toy car moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed V of the car is:

Choose an answer

38 m/sec

3.8 m/sec

0.6 m/sec

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