A non SI unit called 39 nit 39 is the unit of which of the following photometric quantities used to ...........

General Studies (CGL) General Science

A non-SI unit called 'nit' is the unit of which of the following photometric quantities used to measure a multitude of light intensity?

This questions was previously asked in

Combined Graduate Level Examination Tier I 2023

View All ssc Previous Year Papers

Luminous exposure

Luminance

Luminosity

Luminous emittance

छोटे Courses बड़े Results

Master General Science

Prepare through Micro-courses

Try Now

Explanation:

- Luminance (Option 2): This refers to the intensity of light emitted or reflected from a surface in a given direction. It's measured in “nits” and describes the brightness perceived by the human eye. Correct Answer

- Luminous exposure (Option 1): This is the measure of light energy from a source received by a surface over a particular time. It is assessed in lux-seconds.

- Luminosity (Option 3): Often related to the intrinsic brightness or power of an object, like a star, measured in watts, not nits.

- Luminous emittance (Option 4): This describes the luminous flux emitted from a surface per unit area, usually expressed in lumens per square meter.