Physics, asked by nayeem8840, 10 months ago

if a mirror has a focal length of - 20 centimetre it is a

A - Convex Mirror
B - Concave Mirror
C - Plane Mirror
D - none of these

Answers

Answered by santhosh72586

2

Explanation:

a concave mirror has a negative focal length

so option is b

Answered by arjun4500

2

Answer:

(B) Concave Mirror

is the rights answer

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