Physics, asked by sahilsri8506, 11 months ago

Find the focal lenght of a lens of power -2.0d . What type of lens is this

Answers

Answered by shiva752
1

Answer:

We know that,

P = 100 / f (in cm.)

-2 = 100/ f

f = 100/2

f = 50 cm.

focal length is positive so the lens is convex.

Answered by ssam55225522
0

Answer:If a lens has a shorter focal length it is said to be more powerful. The power of a lens is defined as the reciprocal of the focal length. Lens power is measured in dioptres (D).

Explanation:

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