…………….. are used in wide angle spyhole in doors.

…………….. are used in wide angle spyhole in doors.

A) Concave lens

B) Convex lens

C) Concave mirror

D) Convex mirror

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

A) Concave lens

5 views Answered 2023-02-05 15:29

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