Question

The power of lens is +2.0 D.

(A) Find the focal length of lens in meters.

(B) Name the kind of lens. Explain with the help of figure whether thirs lens would converge or diverge a beam of light​

Answer 1

Answer:

The focal length of the lens = 0.5 m

Explanation:

The capability of lens to bend the light is termed as the power of lens. Also the greater the power the greater the refraction of light.

The power of a lens is also defined as the inverse of the focal length.

Mathematically,

Power\ of\ a\ lens\ = \frac{1}{f}Power of a lens =

f

1

Where,

f = focal length of the lens which is measured in meters.

Power of a lens is measured in Dioptres (D).

Now from the question,

Power of the lens = +2 D

∴ Power\ of\ a\ lens\ = \frac{1}{f}Power of a lens =

f

1

2 = \frac{1}{f}2=

f

1

⇒ f = 0.5 m

Explanation:

you solve queston