A person can't see can't see any object distinctly placed beyond 40 cm from his eye. calculate the power of the lens which will enable him to see distant stars clearly
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Answer:
Explanation:
1/f= 1/v - 1/u
=> 1/f= 1/-40 - 1/infinity
=>f = -40
Now,
Power= 100/f
=>power= 100/-40
=> power= -2.5 Dioptre
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