JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

Understanding +4 | -1

Given below are two statements
Statement-I: The telescope that uses a lens as an objective is called "refracting telescope"
Statement-II: The telescope that uses a mirror as an objective is called "reflecting telescope

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Correct option: A

Both statement I and statement II are correct

Option A (Both statement I and statement II are correct) is correct because it accurately describes the definitions of refracting and reflecting telescopes.

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In refraction, light waves are bent on passing from one medium to the second medium, because, in the second medium A double convex lens is made of glass which has its refractive index 1,45 for violet rays and 1.50 for red rays. If the focal length for violet ray is

20 \mathrm{~cm}

, the focal length for red ray will be Which light rays undergoes two internal reflection inside a raindrop, which of the rainbow is formed? A piece of plane glass is placed on a word with letters of different colours. The letters which appear minimum raised are A dentist has a small mirror of focal length

16 {~mm}

. He views the cavity in the tooth of a patient by holding the mirror at a distance of

8 {~mm}

from the cavity. The magnification is All of the following statements are correct except