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areebah
@areebah
August 2021
2
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A. A convex lens if focal length 40cm is in contact with a concave lens of focal length 25cm . The power of yhr vombination of the lenses :
A.-1.5
B.-6.5
C.+6.5
D.+6.67
Solution ??
Ans: B :/
Answers & Comments
khushi62
And b . -6.5 this is the answer
0 votes
Thanks 0
areebah
Oh well thanks for recomfirming it
But want the solution to this
abhay2003
Answer =A..
I hope its help you.
1 votes
Thanks 1
areebah
The answer is -6.5 not -1.5
areebah
And why have u multiplied the power with 100
areebah
Shoudnt it be divided by 100 ??
areebah
Coz focal length in terms of power is always taken in meters
areebah
Yeah i figured out already ! Thanks . But the answer worries me a bit . Maybe its the mis printing of the option or dk what :)
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Answers & Comments
But want the solution to this
I hope its help you.