EASY
12th West Bengal Board
IMPORTANT
Earn 100

In a single slit diffraction pattern, how does the angular width of central maximum change, when the distance between the slit and screen is increased?

Important Questions on Wave Optics

EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 17 - Wave Optics>EXERCISE 17>Q 39

In a single slit diffraction pattern, how does the angular width of central maximum change when light of smaller wavelength is used? Justify your answer in each case.

MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 17 - Wave Optics>EXERCISE 17>Q 40
Define resolving power of a compound microscope. On what factors does it depend ?
EASY
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 17 - Wave Optics>EXERCISE 17>Q 41
If the angle between the axis of polariser and the analyser is 45°, write the ratio of the intensities of original light and the transmitted light after passing through the analyser.
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 17 - Wave Optics>EXERCISE 17>Q 42

In a single slit diffraction experiment, the width of the slit is reduced to half its original width. How could this affect the size and intensity of the central maximum?

MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 17 - Wave Optics>EXERCISE 17>Q 43
In what way is a plane polarized light different from an  unpolarised light? 
MEDIUM
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 17 - Wave Optics>EXERCISE 17>Q 44
Two polaroids A and B are kept in crossed position. How should a third polaroid C be placed between them so that the intensity of polarised light transmitted by polaroid B reduces to 18th of the intensity of unpolarised light incident on A?
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 17 - Wave Optics>EXERCISE 17>Q 1
Derive Snell's law of refraction using Huygen's principle.
HARD
12th West Bengal Board
IMPORTANT
A Text Book of PHYSICS PART 2 : CLASS 12>Chapter 17 - Wave Optics>EXERCISE 17>Q 2
For reflection of a plane wavefront at a plane reflecting surface, construct the corresponding reflected wavefront. Using this diagram, prove that angle of incidence is equal to the angle of reflection.