Physics, asked by ayuvi002, 10 months ago

Plzz help me
Plzzzzz

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Answered by satishsoni1009

0

Answer:

(4) one is correct.....

Answered by dorgan399

3

Explanation:

79)2) infinite

as power combination formula is 1/F =1/f1 +1/f2..

so both have same focal length

=>1/F= 1/f-1/f=0

=>F=1/0

=>F= infinite

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