Given below are two statements :
Statement I: When the white light passed through a prism, the red light bends lesser than yellow and violet.
Statement II : The refractive indices are different for different wavelengths in dispersive medium. In the light of the above statements, choose the correct answer from the options given below :
Statement I: When the white light passed through a prism, the red light bends lesser than yellow and violet.
Statement II : The refractive indices are different for different wavelengths in dispersive medium. In the light of the above statements, choose the correct answer from the options given below :
- (A)Both Statement I and Statement II are true.✓ Correct
- (B)Statement I is true but Statement II is false.
- (C)Both Statement I and Statement II are false.
- (D)Statement I is false but Statement II is true.
Answer: (A)
Solution
In a dispersive medium the refractive index decreases as wavelength increases; since , red light has the smallest refractive index and bends the least — Statement I is correct.
Statement II states precisely the reason for this: refractive index varies with wavelength in a dispersive medium, which is what causes dispersion in the first place. So Statement II is also correct, and it correctly explains Statement I.
Statement II states precisely the reason for this: refractive index varies with wavelength in a dispersive medium, which is what causes dispersion in the first place. So Statement II is also correct, and it correctly explains Statement I.
JEE Main · 2024 · 05 Apr 2024 · Shift 2 · Single correct option