Question # 1

The time interval during which the Voltage source changes its polarity once is known as:

Choose an answer

Time period T

Half the time period

Quarter the time period

Two third of the time period

None of these

During the projectile motion, the horizontal component of velocity

Choose an answer

changes with time

remains constant

becomes zero

decreases with time

One newton is a force that produces an acceleration of 0.5 m/sec²in a body of mass:

Choose an answer

2 kg

3 kg

4 kg

8 kg

Average value of A.C voltage during one cycle is

Choose an answer

1

Zero

Maximum

Variable

The ratio of energy E to the corresponding frequency (f) of the radiation (emitted or absorbed) is called:

Choose an answer

Wien's constant

Stefen's constnat

Planck's constant

Boltzmann's constant

None of these

In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is

Choose an answer

Mg

1/2 Mg

Zero

2 Mg

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

Choose an answer

60°

90°

30°

0°

Laplace formula is derived from

Choose an answer

Isothermal change

Adiabatic change

Isobaric change

None of these

The voltage increases linearly with

Choose an answer

time

velocity

acceleration

torque

The magnitude of induced emf depends upon the:

Choose an answer

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

A cube of metal is given a positive charge Q. For the above system, which of the following statements is true?

Choose an answer

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 angle between centripetal force and displacement of the body moving in a circle is:

Choose an answer

0°

90°

180°

None of these

In gases, the charge carriers are:

Choose an answer

Electrons

Positive ions

Negative ions

Both A and C

Both A and B

when the deformation produced in the material become permanent, this type of behaviour is called

Choose an answer

proportionality

elasticity

plasticity

none of them

If time period of a pendulum is doubled by increasing its length, then its frequency will

Choose an answer

Also be doubled

Become half

Become one fourth

Becomes four times

For a given angle of projection, if the time of flight of a projectile is doubled, the horizontal range will increases to

Choose an answer

Four times

Thrice

Once

Twice

The inkjet printer ejects a thin stream of:

Choose an answer

Water

Oil

Ink

Any of above

None of these

By convention, torques producing clockwise rotation are taken as:

Choose an answer

Positive

Nagative

Zero

None of these

In case of an ideal gas, the P.E associated with its molecule is

Choose an answer

maximum

zero

minimum

not fixed

The dimension of linear inertia is:

Choose an answer

MLT²

ML°T^-2

ML°T°

MLT^-1

The work done in moving a body between two points in a conservation field is independent of the:

Choose an answer

Direction

Force applied

Path followed by the body

Power

When brakes are applied to a fast moving car, the passengers will be thrown:

Choose an answer

Forward

Backward

Downward

None of these

The concept of entropy was introduced into the study of thermodynamics in

Choose an answer

1856

1865

1656

1685

Teh consumption of energy by a 1000 watt heater in half an hour is:

Choose an answer

5 Kwh

0.5 Kwh

2.5 Kwh

3.2 Kwh

When relatively simple molecules are chemically combined into massive molecules, the reaction is called:

Choose an answer

Fission reaction

Fusion reaction

Polymerization

Any of these

None of these

Dimension of mass is written as:

Choose an answer

M

[M]

(M)

[m]

Distance covered by a freely failing body n the first second of its motion will be:

Choose an answer

4.9 m

9.8 m

19.6 m

29.4 m

Any superconductor with critical temperature above 77 K, is referred as

Choose an answer

low temperature superconductor

high temperature superconductor

very low temperature superconductor

none of them

Rocket engines lift a rocket from the earth surface, because hot gas with high velocity

Choose an answer

Push against the air

React against the rocket and push it up

Heat up the air which lifts the rocket

Push against the earth

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Choose an answer

cross-section

height

none of them

both of them

Speed of light in vacuum depends upon:

Choose an answer

Frequency

Wavelength

Amplitude

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