Lux is unit of which physical quantity?

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SSC JE EE Previous Year Paper 6 (Held On: 25 Jan 2018 Morning)
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  1. Luminance
  2. Luminous intensity
  3. Illumination
  4. Luminous flux

Answer (Detailed Solution Below)

Option 3 : Illumination
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Detailed Solution

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The derived SI unit of illuminance is the lux (lx).

Quantity

Unit

Luminous energy

lumen second (lm.s)

Luminous flux/luminous power

lumen (lm)

Luminous intensity

candela (cd)

Luminance

candela per square metre (cd/m2)

Illuminance

lux (lx)

Luminous emittance

lux (lx)

Luminous exposure

lux second (lx.s)

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