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In 1900, Planck suggested that light consists of small packets of energy that are called

An owner of a Dry fruits shop sold small packets of mixed nuts for Rs. 150 each and large packets for Rs. 250 each. One day he sold 5000 packets, for a total of Rs. 10.50 lakh. How many small packets

A proton is confined to a cubic box, whose sides have length 10-12 m. What is the minimum kinetic energy of the proton? The mass of proton is 1.67 * 10-27 kg and Planck's constant is 63 * 10-34 Js

The spacing between vibrational energy levels in CO molecule is found to be 8.44 * 10-2 eV. Given that the reduced mass of CO is 1.14 * 10-26 kg, Planck's constant is 6.626 * 10-34 Js and 1eV = 1.6

If Planck's constant were zero, then the total energy contained in a box filled with radiation of all frequencies at temperature T would be ( k is the Boltzmann constant and T is nonzero)

Only a very small fraction of the energy supplied to a domestic light bulb is emitted as light. This is because

STATEMENT-1: Band gap in germanium is small.becauseSTATEMENT-2: The energy spread of each germanium atomic energy level is infinitesimally small