The
power of
a convex lens
is 2.5 dioptres. Find its focal
length
Answers
Answered by
1
Answer:
Solution :
` P = 1/f therefore 2.5 D = 1/f`
` therefore f = 1/( 2.5 D ) = 0.4 m = 40 cm `
The focal length of the lens = 40 cm
Answered by
2
Answer:
Power = 2.5 d
f = 1/P
= 1/2.5
= 0.4m
= 40 cm
The focal length is 40 cm .
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