NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Wave Optics
NEET · Physics · Wave Optics
STATEMENT - 1 : If white light is used in YDSE, coloured fringes...
STATEMENT - 1 : If white light is used in YDSE, coloured fringes are obtained.
STATEMENT - 2 : The fringe width is proportional to the wavelength (color) of light.
Options
- AStatement - 1 is True, Statement - 2 is True; Statement - 2 is a correct explanation for Statement - 1.
- BStatement - 1 is True, Statement - 2 is True; Statement - 2 is NOT a correct explanation for Statement - 1.
- CStatement - 1 is True, Statement - 2 is False.
- DStatement - 1 is False, Statement - 2 is True.
Correct answer
A. Statement - 1 is True, Statement - 2 is True; Statement - 2 is a correct explanation for Statement - 1.
Step-by-step solution
"The fringe width is proportional to the wavelength (color) of light."
(\checkmark) Also true, since
(\beta=\frac{\lambda D}{d})
so (\beta \propto \lambda).
Relation between them:
Colored fringes in YDSE with white light occur because different wavelengths have different fringe widths.
Correct: Both Statement-1 and Statement-2 are true, and Statement-2 is the correct explanation of Statement-1.