EASY
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The energy of the em waves is of the order of 15 keV. To which part of the spectrum does it belong?

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Important Questions on Electromagnetic Waves

MEDIUM
NEET
IMPORTANT
Light with an energy flux of 25×104 W m-2 falls on a perfectly reflecting surface at normal incidence. If the surface area is 15 cm2, the average force exerted on the surface is: