JEE PHYSICS MCQ: RAY OPTICS

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A dentist has a small mirror of focal length

\mathrm{16}\,\,\mathrm{mm}

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

\mathrm{8 mm}

from the cavity. The magnification is

View answer and explanation

Correct option: C

Option C (2) is correct because the magnification of a concave mirror when the object is between the pole and focus is positive and greater than 1. The calculation yields a magnification of 2.

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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

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, 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