The focal length of a spherical mirror of radius of curvature 30cm is ______.
A) 10cm B) 15cm
C) 20cm D) 30cm
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Answered by
1
b) 15
because R = 2f.
because R = 2f.
aryarajesh12299:
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Answered by
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We know that focal length ( f ) is double of the Radius of curvature ( R )
⇒ R = 2f
if R = 30 cm
f = 30 ÷ 2
f = 15 cm
⇒ R = 2f
if R = 30 cm
f = 30 ÷ 2
f = 15 cm
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