Physics, asked by Jahnavi028, 1 year ago

plz answer for this questions. all plz it's urgent

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Answered by Rathi0010

20. power =1/f means reciprocal of focal length but convert it first in meters and the si unit of power of lense is diopter(D) so power of lense is 1/0.25D

Jahnavi028: can u answer another two questions

Rathi0010: ys but after some bcoz now i m busy

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