Question

Which of the statements are correct with reference to single slit diffraction pattern?
(i) Fringes are of unequal width
(ii) Fringes are of equal width
(iii) Light energy is conserved
(iv) Intensities of all bright fringes are equal

• A. (i) and (iii)
• B. (i) and (iv)
• C. (ii) and (iv)
• D. (ii) and (iii)

Answer 1

The Correct Option is A

Key Observations:

• In single-slit diffraction, fringes are of unequal width (central maximum is wider).
• Light energy is conserved but redistributed, making the central fringe brightest and others dimmer.

Conclusion: The correct statements are (i) and (iii), corresponding to Option (A).