Science, asked by hieee, 10 months ago

what is the focal length of power of lens a spectacle is -0.5 d

Answers

Answered by suryansh060

0

Power is inversly proportional to focal length
P=1/F
0.5=1/F
F=1/0.5
F=1000/5
F=200 cm

Answered by missaurabh97

0

answer is M centimetre .

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