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Physics CBSE Live product
Class 10 (2025-26)
Light reflection and refraction
Annual Revision III - Light
8.
Power of lens
Question:
2
m.
Solve the given problem:
Find the focal length of a lens of power \(-6\ D\). What type of lens is this?
Power of lens
is,
\(P\ =\ \frac{1.5}{f}\)
\(P\ =\ 2f\)
\(P\ =\ \frac{1}{f}\)
\(P\ =\ f\)
Focal length of a lens
(\(f\)) \(=\)
\(m\)
Type of lens
is,
Diverging lens
Converging lens
Important!
Note: Enter your answers with one decimal digit.
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