Light - Study Mode
[#426] Speed of light . . . . . . . . is.
Correct Answer
(C) 3 × 10 8 ms -1
[#427] The mirror always produces an image of the object that is virtual, large and of equal size.
Correct Answer
(C) plane
[#428] Endoscope' used by the doctors for examining the inside of patient's stomach, works on the principle of
Correct Answer
(D) Total internal reflection of light
[#429] Parabolic mirrors are used in
Correct Answer
(A) car headlights
[#430] Why does sky appear blue?
Correct Answer
(C) Blue wavelength is relatively low as white light and it is most scattered by air molecules