Light - Study Mode
[#316] When a light wave is reflected from a mirror, there is a change in its
Correct Answer
(B) amplitude
[#317] Which are not complementary colours?
Correct Answer
(B) Red and magenta
[#318] The ability of a medium to reflect light is also expressed by its . . . . . . . .
Correct Answer
(B) light density
[#319] The sun is seen little before it rises and for a short while after it sets. This is because of
Correct Answer
(B) atmospheric refraction
[#320] A light beam that appears at the main focus of a concave lens will emit after refraction.
Correct Answer
(A) parallel to the principal axis