BPSC – Combined Competitive Examination · ಪ್ರಶ್ನೆ 114
In which medium will the speed of light be minimum?
ಉತ್ತರ ತೋರಿಸು ಮತ್ತು ವಿವರಣೆ
ಉತ್ತರ: (C) Glass
ವಿವರಣೆ
Speed of light = c/n; the higher the refractive index, the slower the light.
- (A) ತಪ್ಪು
Wrong: maximum in vacuum.
- (B) ತಪ್ಪು
Wrong: nearly as fast as in vacuum.
- (C) ಸರಿ
Correct: glass (n ≈ 1.5) slows light the most here.
- (D) ತಪ್ಪು
Wrong: n ≈ 1.33, less than glass.
- (E) ತಪ್ಪು
Wrong: only one of the options A–D is correct.