Is there any phase change when a light wave going from a denser to a rarer medium, then?

Important Questions on Interference of Light

HARD

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 7 - Interference of Light>QUESTIONS>Q 12

Is there any phase change when a light wave undergoing refraction, then?

HARD

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 7 - Interference of Light>QUESTIONS>Q 13

Obtain the ratio of the interference fringe-widths

β_{1}

and

β_{2}

obtained with monochromatic red light of

λ_{1} = 660 nm

and ultraviolet light of

λ_{2} = 330 nm

.

HARD

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 7 - Interference of Light>QUESTIONS>Q 14

Widths of the two slits in Young’s experiment are in the ratio $4 : 1$ . What is the ratio of the amplitudes of light waves emitted from them?

MEDIUM

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 7 - Interference of Light>QUESTIONS>Q 15

Young’s double-slit experiment was performed with monochromatic light of blue colour. The experiment was then repeated, first with light of red colour and then with light of yellow colour. Which colour produces interference pattern with maximum fringe separation (i.e., fringe-width)?

MEDIUM

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 7 - Interference of Light>QUESTIONS>Q 16

How is fringe-width of an interference pattern in Young’s double-slit experiment affected if the two slits are brought closer to each other?

MEDIUM

12th ICSE

IMPORTANT

ISC Physics Class 12, Part-2>Chapter 7 - Interference of Light>QUESTIONS>Q 17

In Young’s double-slit experiment, the intensity of a bright fringe is $I$ . What will be the intensity at the same place if one slit is closed?

MEDIUM

12th ICSE