फोकल लेंथ ऑफ़ लेंस इस 25 सेंटीमीटर व्हाट इज द पावर. इन इंग्लिश
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Answer:
Power of lens is P=
f
1
,focal length should be in meter
f=−25cm=−.25m
so P=
−0.25
1
=−4D
Since the focal length is negative, it is a concave lens or diverging lens.
Explanation:
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