Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 12

# Mark Out the Correct Options. (A) Luminous Flux and Radiant Flux Have Same Dimensions. (B) Luminous Flux and Luminous Intensity Have Same Dimensions. - Physics

Short Note

Mark out the correct options.

(a) Luminous flux and radiant flux have same dimensions.

(b) Luminous flux and luminous intensity have same dimensions.

(c) Radiant flux and power have same dimensions.

(d) Relative luminosity is a dimensionless quantity.

#### Solution

Correct option (b), (c), (d)

a) No, luminous flux has the dimension of luminous intensity (cd/sr). The dimension of radiant flux is watt.

b) Yes, both have the dimension of luminous intensity, i.e. cd/sr.

c) Yes, both have the dimensions of power.

d) Yes, it is a ratio of same kind of quantities. So, it is dimensionless.

Concept: Light Process and Photometry
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#### APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 1
Chapter 22 Photometry
MCQ | Q 4 | Page 454
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