Question

(3) 0.5 cm
(4) 8 cm
A far sighted person can see object beyond
71 cm clearly if separation between glasses and eye
Lens is 2 cm, then find focal length of glass?
(1) 23 cm
(2) 34.5 cm
(3) 18.4 cm
(4) 30 cm
If velocity of an electromagnetic wave in a medium​

Answer 1

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