Question

Find the power power of convex lens of focal length 2 metre​

Answer 1

Answer:

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Explanation:

$to \: find = \\ power \: (P)\: of \: convex \: lens \\ \\ given = \\ for \: a\: convex \: lens \\focal \: length \: (f) = 2.m \\ \\ so \: we \: know \: that \\ \\ power \: of \: lens \: (P) = \frac{1}{f \: (m)} \\ \\ = \frac{1}{2} \\ \\ power \: (P)= + 0.5 \: D$

Answer 2

Explanation:

The power of convex lens is,

P=

f

1

Putting the value of focal length we get,

P=

2

1

=0.5 D