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What is the unit of luminous intensity?
- a)Lux
- b)Lumen
- c)Candela
- d)Watt
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
What is the unit of luminous intensity?a)Luxb)Lumenc)Candelad)WattCorr...
The unit of luminous intensity is candela (cd).
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What is the unit of luminous intensity?a)Luxb)Lumenc)Candelad)WattCorr...
Luminous Intensity Definition
Luminous intensity is a measure of the perceived power of light emitted by a source in a particular direction. It quantifies how much light is emitted per unit solid angle.
Unit of Luminous Intensity
The correct unit for measuring luminous intensity is the candela (cd). Here’s why it is the right choice:
Comparative Units
To understand how candela differs from other units related to light:
Conclusion
In summary, the candela is the proper unit for luminous intensity, as it effectively describes how bright a light source appears in a given direction, making it essential for various applications in lighting and safety standards.
Luminous intensity is a measure of the perceived power of light emitted by a source in a particular direction. It quantifies how much light is emitted per unit solid angle.
Unit of Luminous Intensity
The correct unit for measuring luminous intensity is the candela (cd). Here’s why it is the right choice:
- Definition: One candela is defined as the luminous intensity of a source emitting monochromatic radiation of frequency 540 x 10^12 hertz and having a radiant intensity of 1/683 watt per steradian.
- Directionality: Unlike other units, candela specifically accounts for the direction of light emission, which is crucial for applications in lighting design and safety.
- SI Unit: The candela is one of the seven base units in the International System of Units (SI), highlighting its importance in scientific measurements.
Comparative Units
To understand how candela differs from other units related to light:
- Lux: This measures illuminance, or the amount of light hitting a surface, which is not the same as luminous intensity.
- Lumen: This unit measures the total amount of visible light emitted by a source, regardless of direction.
- Watt: This measures power, not specifically related to light perception or intensity.
Conclusion
In summary, the candela is the proper unit for luminous intensity, as it effectively describes how bright a light source appears in a given direction, making it essential for various applications in lighting and safety standards.
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What is the unit of luminous intensity?a)Luxb)Lumenc)Candelad)WattCorr...
Candela
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What is the unit of luminous intensity?a)Luxb)Lumenc)Candelad)WattCorrect answer is option 'C'. Can you explain this answer?
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What is the unit of luminous intensity?a)Luxb)Lumenc)Candelad)WattCorrect answer is option 'C'. Can you explain this answer? for Delhi Police Constable 2025 is part of Delhi Police Constable preparation. The Question and answers have been prepared according to the Delhi Police Constable exam syllabus. Information about What is the unit of luminous intensity?a)Luxb)Lumenc)Candelad)WattCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Delhi Police Constable 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is the unit of luminous intensity?a)Luxb)Lumenc)Candelad)WattCorrect answer is option 'C'. Can you explain this answer?.
What is the unit of luminous intensity?a)Luxb)Lumenc)Candelad)WattCorrect answer is option 'C'. Can you explain this answer? for Delhi Police Constable 2025 is part of Delhi Police Constable preparation. The Question and answers have been prepared according to the Delhi Police Constable exam syllabus. Information about What is the unit of luminous intensity?a)Luxb)Lumenc)Candelad)WattCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Delhi Police Constable 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What is the unit of luminous intensity?a)Luxb)Lumenc)Candelad)WattCorrect answer is option 'C'. Can you explain this answer?.
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