MEDIUM
12th ICSE
IMPORTANT
Earn 100

State one condition for observing a sustained interference of light.

Important Questions on Interference of Light

MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 7 - Interference of Light>QUESTIONS>Q 10
Define coherent sources of light.
MEDIUM
12th ICSE
IMPORTANT
ISC Physics Class 12, Part-2>Chapter 7 - Interference of Light>QUESTIONS>Q 11
In a region illuminated by two light-sources 1 and 2, the intensity at each point is I1+I2, where I1 and I2 are the intensities at the point due to sources 1 and 2 separately. Are the sources coherent?
 
MEDIUM
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 going from a rarer medium to a denser medium suffers reflection at the interface?

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 going from a denser to a rarer medium, then?
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 β1 and β2 obtained with monochromatic red light of λ1=660 nm and ultraviolet light of λ2=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)?