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