Physics jamb 2024

The power of a convex lens of focal length 20cm is 

a

0.05D

b

0.50D

c

5.00D

d

50.00D

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Explanation

Correct Option
c

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Discussions (5)

Odemosad
1 year ago

Using P = 1/F
F = 20cm = 0.2m

Ans is 5D

converting cm to m I taught u re suppose to divide by 1000,so it should be 50 not 5

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