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Find the luminous flux of 10 W source o...

Find the luminous flux of 10 W source of 600 nm. The relative luminosity at 600 nm is 0.6.

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The luminous flux of a1W of 55=m=685 lumen. Thus, the luminous flux of a 10 W source of 555=6850 luen. The luminus flux of a 10 W source of 600 nm is, therefoe `0.6xx6850` lumen =4110 lumen.
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HC VERMA-PHOTOMETRY-Exercises
  1. Find the luminous flux of 10 W source of 600 nm. The relative luminos...

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  2. A source emits 45 joules of energy in 15 s. What is the radiant flux o...

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  3. A photographic plate records sufficient intense lines when it is expos...

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  4. Using figure (22.1), find the relative luminosity of wavelength (a) 48...

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  5. The relative luminosity of wavelength 600 nm is 0.6. Find the radiant ...

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  6. The luminous flux of a monochromatic source of 1 W is 450 lumen / watt...

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  7. A source emits light of wavelengths 555 nm and 600 nm. The radiant flu...

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  8. A light source emits monochromatic light of wavelength 555 nm. The sou...

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  9. A source emits 31.4 W of radiant flux distributed uniformly in all dir...

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  10. A point source emitting 628 lumen of luminous flux uniformly in all di...

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  11. The illuminance of a small area changes from 900 lumen m^-2 to 400 lum...

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  12. A point source emitting light uniformly in all directions is placed 60...

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  16. An electric lamp and a candle produce equal illuminance at a photomete...

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