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Official Soldier Technical Paper: [Trichy (CHE)] - 27 Dec 2020

Option 1 : Dioptre

option(1)

__ CONCEPT__:

**Power of lens**: It is defined as the property of lens to bend the light fall on it.- The
**power of the lens**is measured in**Dioptre.******

- The
- The
**power of the lens**is defined as inversely proportional to the Focal length.

P = 1/F (where P is Power, F is focal length)

- The S.I unit of power is m-1 or
**Dioptre**.

__ EXPLANATION__:

**Power of a lens measured in dioptre**.

__Additional Information__

**Liter:**It is a physical quantity that is used to measure the quantity of volume.- The fundamental quantity of Volume is L.

**Velocity**: It is that physical quantity that is used to measure the rate of change of position with time.- The unit of velocity is ms-1.