Wave Optics Test

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Wave Optics Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

In Young`s double slit experiment, if two slightly different wavelengths are present in the light used, then

A
In Young`s double slit experiment, if two slightly different wavelengths are present in the light used, then

B
there will no fringes at all

C
the central fringe will be white

D
the sharpness of the fringes will decrease as we move away from central fringe
Question 2
1 / -0

The following question has four choices out of which ONLY ONE is correct.

Two waves of same wavelength and amplitude interfere to give a minimum, when phase difference is

A
0

B
π / 2

C
π

D
3 π / 2
Question 3
1 / -0

In films beautiful colours are obtained due to

A
diffraction

B
scattering

C
dispersion

D
interference
Question 4
1 / -0

In Young`s double slit experiment, the central bright fringe can be identified

A
as it has greater intensity than the other bright fringe

B
as it is wider than the other bright fringe

C
as it is narrower than the other bright fringes

D
by using white light instead of monochromatic light
Question 5
1 / -0

In Young`s double slit experiment, if the slits are of unequal width

A
fringes will not be formed

B
the position of minimum intensity will not be completely dark

C
bright fringes will not be formed at the center of the screen

D
None of these
Question 6
1 / -0

Who discovered neutron?

A
Chadwick

B
Newton

C
Khurana

D
None of these

Solution

James Chadwick discovered the neutron in 1932.
Question 7
1 / -0

Which of the following does not change, when a photon enters into glass from air?

A
Momentum

B
Velocity

C
Wavelength

D
Energy
Question 8
1 / -0

Which of the following is not a property of light?

A
It can travel through vacuum.

B
It requires a material medium for propagation.

C
It involves transportation of energy.

D
It has a finite speed.

Solution

Electromagnetic waves do not require a medium to propagate. Light is an electromagnetic wave.
Question 9
1 / -0

A tuning fork of unknown frequency when sounded with another of 256 Hz gives 4 beats/sec.When a tuning fork loaded with a certain wax it is found to give 2 beats.What is the unknown frequency?

A
260

B
300

C
456

D
500
Question 10
1 / -0

In vacuum, the speed of light depends upon

A
wavelength

B
colour

C
frequency

D
None of these

Solution

The velocity of light in vacuum does not depend on frequency or wavelength. According to the theory of relativity, velocity of light is constant in a non-inertial frame of reference. The velocity of light does not depend on anything.

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Re-Attempt Weekly Quiz Competition

Wave Optics Test - 3

Result

Wave Optics Test - 3

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SHARING IS CARING

Question 1

In Young`s double slit experiment, if two slightly different wavelengths are present in the light used, then

there will no fringes at all

the central fringe will be white

the sharpness of the fringes will decrease as we move away from central fringe

Question 2

0

π / 2

π

3 π / 2

Question 3

diffraction

scattering

dispersion

interference

Question 4

as it has greater intensity than the other bright fringe

as it is wider than the other bright fringe

as it is narrower than the other bright fringes

by using white light instead of monochromatic light

Question 5

fringes will not be formed

the position of minimum intensity will not be completely dark

bright fringes will not be formed at the center of the screen

None of these

Question 6

Chadwick

Newton

Khurana

None of these

Solution

Question 7

Momentum

Velocity

Wavelength

Energy

Question 8

It can travel through vacuum.

It requires a material medium for propagation.

It involves transportation of energy.

It has a finite speed.

Solution

Question 9

260

300

456

500

Question 10

wavelength

colour

frequency

None of these

Solution

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