Light - Study Mode
[#181] The magnifying power of an astronomical telescope can be decreased by
Correct Answer
(B) increasing the focal length of the eyepiece
[#182] A man cannot see clearly beyond 10 m. The disease he suffers from
Correct Answer
(B) myopia
[#183] The speed of light in a medium whose refractive index 1.5 is . . . . . . . .
Correct Answer
(B) 2.0 × 10 8 m/s
[#184] A mirage occurs because of
Correct Answer
(B) total internal reflection by layers of air
[#185] A simple microscope consists of a
Correct Answer
(A) short focus convex lens