Question # 1

γ-rays are

Choose an answer

electrostatic waves

electromagnetic waves

heavy particles

longitudinal waves

A carnot cycle consists of

Choose an answer

One step

two step

three steps

four steps

A potential barrier of 0.7V exists across p-n junction made from:

Choose an answer

Germanium

Silicon

Arsenic

Gallium

Indium

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Choose an answer

magnetic flux

magnetic flux density

magnetic induction

magnetic field intensity

The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

Choose an answer

10 KJ

5 KJ

2 KJ

1 KJ

Maric Curie and Pieree Curie discovered two new radioactive elements, which are called

Choose an answer

polonium uranium

uranium and radium

polonium and radium

none of these

The electrons occupying the conduction band are known as

Choose an answer

conduction electrons

free electrons

both of them

none of them

A flowing liquid possess

Choose an answer

K.E

P.E

Pressure Energy

All

When a wave is travels from one place to another, it transfers:

Choose an answer

Matter

Energy

Momentum

Both B and C

The surface destiny of charge is defined is:

Choose an answer

Charge per volume

Mass per volume

Charge per area

Mass per area

Both (B) and (C)

When a nucleus emits an alpha particle, it atomic mass decreased by

Choose an answer

2

1

4

3

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

Synthetic materials fall into the category of

Choose an answer

crystalline solids

amorphous

polymeric solids

all of them

A particle having mass and charge equal to that of an electron is called:

Choose an answer

Proton

Positron

Pion

Pi-meson

Both (C) and (D)

The substance in which atoms cooperate with each other in such a way so as to exhibit a strong magnetic effect, are called

Choose an answer

diamagnetic substances

ferromagnetic substances

paramagnetic substances

all of them

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

Choose an answer

0°

30°

60°

90°

The magnifier forms a virtual image of the object at:

Choose an answer

Least distance of distinct vision

Much farther than the least distance

Both A and B are correct

None of these

Formula for calculating moment of inertia of the bodies of one pair is same. Tick the answer.

Choose an answer

Disc, sphere

sphere, hoop

Thin rod, hoop

Hoop,disc

The terms phase difference and path difference are:

Choose an answer

Same

Different

Equal

None of these

A ray passing through optical center of a lens, after refraction:

Choose an answer

Passes through focus

Go deviated

Retraces its path

Both B and C

We can express the work in term of

Choose an answer

directly measurable variables

indirectly measurable variables

either of them

both of them

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 the coil

Relative motion of the loop and magnet

Any one of above

All above

How much force is required to slide one layer of the liquid over the other layer is measured by

Choose an answer

friction

density

viscosity

resistivity

Fire fighters have jet attached to the head of their water pipes in order to

Choose an answer

Increase the mass of water flowing per second

Increase the velocity of water flowing out

Increase the volume of water flowing per second

Avoid wastage of water

Conversion of A.C. into D.C. is called:

Choose an answer

Reftification

Amplification

Electric induction

Magnetic induction

None of these

If a charged spherical conductor of radius 10 cm has potential V at a point distance 5 cm from its centre, then the potential at a point distance 15 cm from the centre will be

Choose an answer

1/3 V

2/3 V

3/2 V

3V

The density of water is 10³kg/m³. The water pressure on a submarine is 2.0 x 10⁷N/m². The depth of the submarine below the surface of the water, in maters, is approximately

Choose an answer

200 m

11000 m

2000 m

8000 m

The smooth or steady streamline flow is known as

Choose an answer

laminar flow

turbulent flow

both of them

none of them

Swimming becomes possible because of______law of motion:

Choose an answer

First

Second

Third

None of these

The unit of flux density is also given by

Choose an answer

Weber/m²or Wb . m^-2

Weber/mor Wb . m

Weber/mor Wb . m^-1

Weber or Wb

Which of the following is not mechanical wave?

Choose an answer

Sound wave

Light wave

wave produced in spring

None of them

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