Question # 1

In the formula R = N x m for diffraction grating, N denotes:

Choose an answer

No. of lines/cm

No. of lines/meter

Total number of lines

None of above

Acceleration of a body at any particular instant during its motion is known as

Choose an answer

average acceleration

uniform acceleration

instantaneous acceleration

all of them

The direction of the acceleration is the same as that of

Choose an answer

speed

velocity

both of them

none of them

How much time, theα-particle more massive than an electron

Choose an answer

600

7000

5000

15000

For a fixed force, larger is the mass of a body the

Choose an answer

greater is its acceleration

smaller is its acceleration

smaller is its weight

zero is its acceleration

Which force is not a conservative force?

Choose an answer

Frictional force

Gravitational force

Electric force

Elastic spring force

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

Choose an answer

Germanium

Silicon

Arsenic

Gallium

Indium

When a shell explodes in mid-air, its fragments fly off in

Choose an answer

only one direction

in two direction

different directions

a particular direction

The year when A.H. compton was awarded Nobel Prize is:

Choose an answer

1923

1927

1931

1935

None of these

An inertial frame is that frame in which

Choose an answer

a>0

a=0

a<0

none of these

At absolute temperature, the kinetic energy of the molecules

Choose an answer

Becomes zero

Becomes maximum

Becomes minimum

Remain constant

During a negative β-decayv

Choose an answer

An atomic electron is ejected

A neutron in the nucleus decays emitting an electron

An electron which already present within the nucleus is ejected

A part of binding energy of nuclei is converted into electron

The volume of liquid flowing per second out of an orifice at the bottom of a tank does not depend upon

Choose an answer

The area of the orifice

The height of liquid above the orifice

The density of liquid

Both A and C

In a charged capacitor the energy is stored in

Choose an answer

Both in positive and negative charges

Positive charges

The edges of the capacitor plates

The electric field between the plates

The linear velocity in a circle is called

Choose an answer

Linear velocity

Angular velocity

Tangential velocity

None of these

The angular speed of a flywheel making 120 revolutions/minute is:

Choose an answer

π rad/s

2π rad/s

4π rad/s

6π rad/s

Which of the following cannot be polarized?

Choose an answer

x-rays

light rays

sound waves

ultraviolet rays

The number 134.7 should be written as

Choose an answer

13.47 × 10²

1.347 × 10²

13.47 × 10³

None of these

By convention, the torques are taken as positive if they are in the

Choose an answer

upward direction

rightward direction

clockwise direction

anticlockwise direction

The magnetic field of a solenoid is quite similar to that of a:

Choose an answer

Straight conductor

A horse shoe magne

Any magnet

A bar magnet

If the plane polarized light is incident on the second sheet of Polaroid, no light is emitted when their axes are

Choose an answer

Parallel to each other

Perpendicular to each other

In between two positions

None of these

Electric field lines emerge the charges in

Choose an answer

One dimension

Two dimensions

Three dimensions

None of these

More Classes

Other Links

Physics General Science Test Medium Mode 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