plane faces of two identical Plano convex lens and is equal to 1.5 each having focal length 40 cm are placed against each other each other to form a usual convex lens then what is its length of the lens
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the answer of this question is 5 cm
pratham598:
but dont know the solution
ok
where r u from
mumbai
borivali
which class
11th
and u
9th
bro
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