Question 2 - MCQs from NCERT Exemplar - Chapter 10 Class 10 - Light - Reflection and Refraction

Last updated at April 16, 2024 by

A 10 mm long all pin is placed vertically in front of a concave mirror. A 5 mm long image of the all pin is formed at 30 cm in
front of the mirror. The focal length of this mirror is
(a) – 30 cm
(c) – 40 cm
(b) – 20 cm
(d) – 60 cm


Answer

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So, the correct answer is (b)

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