Photometry MCQ Questions and Answers

The amount of radiant energy which is expressed in ergs per second, flowing from a source of light per unit time is called 1. Luminous flux 2. Light flux 3. Luminosity 4. (1) and (2)

The science of measuring brightness or relative luminous intensities of light emitted by different sources using certain standards and techniques 1. Visible spectrum 2. Photometer 3. Visual photometry 4. None of these

The science with which the relative luminous intensities of light emitted by two sources of light are determined, is : 1. Photometry 2. Visible spectroscopy 3. Visile Photometry 4. All of these

The amount of radiant energy flowing from a source of light per unit time, is 1. Luminosity 2. Luminous flux 3. Luminous intensity 4. None of these

Which of the following of a light source represents the degree to which visible light is present in the radiant energy emitted by the source? 1. Brightness 2. Luminous intensity 3. (1) and (2) 4. None of these

A source of light may emit radiant energy from region of the spectrum. ……. 1. Visible 2. Infrared 3. Violet 4. All of these

The term 'light', includes the…..of electromagnetic energy spectrum 1. Infrared region 2. Visible region 3. Ultra violet region 4. None of these

The radiant energy which causes sensation of vision of the retina of human eye, is called 1. Light 2. Sound 3. Heat 4. Electricity

Light is emanated from 1. Non-luminous bodies 2. Self luminous bodies 3. Any body 4. All of these

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Photometry MCQ Questions and Answers

The luminous flux or the light flux depends on 1. Luminosity 2. Illuminating power 3. Luminous intensity 4. 2 and 3

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The amount of radiant energy which is expressed in ergs per second, flowing from a source of light per unit time is called 1. Luminous flux 2. Light flux 3. Luminosity 4. (1) and (2)

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The science of measuring brightness or relative luminous intensities of light emitted by different sources using certain standards and techniques 1. Visible spectrum 2. Photometer 3. Visual photometry 4. None of these

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The science with which the relative luminous intensities of light emitted by two sources of light are determined, is : 1. Photometry 2. Visible spectroscopy 3. Visile Photometry 4. All of these

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The amount of radiant energy flowing from a source of light per unit time, is 1. Luminosity 2. Luminous flux 3. Luminous intensity 4. None of these

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Which of the following of a light source represents the degree to which visible light is present in the radiant energy emitted by the source? 1. Brightness 2. Luminous intensity 3. (1) and (2) 4. None of these

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A source of light may emit radiant energy from region of the spectrum. ……. 1. Visible 2. Infrared 3. Violet 4. All of these

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The term 'light', includes the…..of electromagnetic energy spectrum 1. Infrared region 2. Visible region 3. Ultra violet region 4. None of these

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The radiant energy which causes sensation of vision of the retina of human eye, is called 1. Light 2. Sound 3. Heat 4. Electricity

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Light is emanated from 1. Non-luminous bodies 2. Self luminous bodies 3. Any body 4. All of these

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