An astronomical telescope in normal adjustement receives light from a distant source `S`. The tube length is now decreased slightly

Options

A. a virtual image of `S` will be formed at a finite distance
B. no image will be formed
C. a small, real image of `S` will be formed behind the eye-piece, closer to it
D. a large, real image of `S` will be formed behind the eye-piece, far away from it

Answer

A

Explanation

When `Llt(f_(0)+f_(e))`, image by objective will be formed between focus and optical centre of eye-piece. Foe eye-piece, `|u_(e)|lt f_(e)`, virtual image will be formed by it.