Power of a convex lens of focal length 50 cm isA- -0-5 DB- 2 DC- 0-5 DD- -2 D

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard IX

Physics

Power of a Lens

Power of a co...

Question

Power of a convex lens of focal length $50 c m$ is

$- 2 D$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

$- 0.5 D$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

$2 D$

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

$0.5 D$

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C
$2 D$

Power, $P = \frac{100}{f} = \frac{100}{50} = 2 D$ , $f$ is the focal length in centimeters and $D$ is the unit of optical power called dioptre.

Suggest Corrections

Similar questions

A person has near point of his vision shifted to 50 cm. What lens must be used to see an object placed at 25 cm from the eye? What is the power of the lens?

Power of a convex lens of focal length 50cm is:

Q. A myopic person can not see objects lying beyond

2 m

. The focal length and power of the lens required to remove this defect will be

Q. Calculate the focal length of a convex lens of power 2D.

A person having myopic eyes uses a concave lens of focal length 50 cm. What is the power of the lens?

Join BYJU'S Learning Program

Power of a convex lens of focal length 50 cm is

The correct option is C 2D Power, P=100f=10050=2 D, f is the focal length in centimeters and D is the unit of optical power called dioptre.

Power of a convex lens of focal length $50 c m$ is

The correct option is C
$2 D$

Power, $P = \frac{100}{f} = \frac{100}{50} = 2 D$ , $f$ is the focal length in centimeters and $D$ is the unit of optical power called dioptre.