MHT CET 2026 Physics question

For large magnifying power of a telescope

(A)object must be large
(B)focal length of objective is largeCorrect
(C)focal length of eyepiece is large
(D)focal length of objective and eyepiece must be large

Answer: (B)

Solution

The magnifying power of an astronomical telescope in normal adjustment is . It is large when the objective has a large focal length and the eyepiece has a small focal length, so option (B) is correct. Option (A) is wrong because

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Question ID VK-096160