AIIMS2019Physics-Optics

AIIMS 2019 Physics Photometry MCQ Question

Type: MCQ-conceptual-Easy-Class 12

What is the dimension of Luminous flux :

A

[cd1][\text{cd}^1]

B

[cd1T1][\text{cd}^1\text{T}^{-1}]

C

[cd1L2][\text{cd}^1\text{L}^{-2}]

D

[cd1L1T1][\text{cd}^1\text{L}^1\text{T}^{-1}]

Correct Answer

Option D

Detailed Explanation

Luminous flux, measured in candelas (cd), represents the total amount of visible light emitted by a source per unit time, reflecting its intensity in the human-visible spectrum. Since the question specifies the dimension of luminous flux, option D is correct as it directly corresponds to the unit of measurement for this physical quantity. The other options are not applicable as they do not provide relevant information or units related to luminous flux, making them irrelevant in this context. Understanding luminous flux is essential in fields such as photometry and lighting design, where quantifying light output is crucial for effective illumination.

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