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A

The luminous efficiency of a monochromati csource is always greater than that of a white light source of same power.

B

the luminous efficiency of a monochromatic source of weavelength 555 m is always greater than that of white light source of same water.

C

The iluminating power of a monochromatic source of wavelenght 555 nm is always greater than that of a white light source of same power.

D

the illuminating power of a monochromatic source is always greater than that of a white light soure of same water.

Text Solution

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The correct Answer is:
B, C
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