A doctor advised to use 4D lens. The focal length of the lens is ……………………..

A doctor advised to use 4D lens. The focal length of the lens is ……………………..

A) 25 cm

B) 400 cm

C) 4 cm

D) 40 cm

Monjur Alahi

7 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

Correct option is A) 25cm

7 views Answered 2023-02-05 15:29

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