Question

How will you investigate the existence of the radiations beyond the red and violet
extremes of the spectrum?

Answer 1

Answer:

Beyond the red light of the spectrum is ultra violet ray which can be investigated as it causes fluorescence on striking fluorescent material and affect photographic plate and beyond violet extreme there is infrared waves which can be investigated as its heating effect is more and mercury level Rises rapidly when ...

Answer 2

How will you investigate the existence of the radiations beyond the red and violet

extremes of the spectrum?

If a blackened bulb thermometer is moved from violet end towards the red end, first a steady rise in temperature is observed, but as the thermometer goes beyond the red end, there is rapid rise in temperature. This shows the existence of some kind of radiation producing the heating effect beyond the red end of the spectrum.

If the radiations from the red end to the violet end are made to fall on the silver chloride solution, it almost remains unaffected beyond the violet end of the spectrum.

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