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A hydrogen atom is in the ground state. It absorbs energy and makes a transition to the n = 3excited state. The atom returns to the ground state by emitting two photons. What are their wavelengths? ? m (lowest energy photon) ? m (highest energy photon)
The discovery of neutron becomes very late because: (1)Neutrons are present in nucleus (2)Neutrons are highly unstable particles (3)Neutrons are chargeless (4)Neutrons
#question. A child applies a force F? parallel to the x-axis to a 10.0-kg sled moving on the frozen surface of a small pond. As the child controls the speed of the sled, the x-comp
Relation among velocity wavelength and Frequency: Consider a wave of wavelength , frequency f and travelling with velocity v. The distance travel by the sound wave during th
why is friction a necessary evil?
what is anti reflection coating ?
Q. If the moons orbit is inclined somewhat relative to the Earth's orbit what effect does this have on eclipses? Answer:- This makes eclipses rarer as well as if the moon's
Copper losses: These losses occur because of ohmic resistance of the transformer windings. If I1 and I2 are primary and secondary currents correspondingly and R1and R2 are the res
Explain the applications of polarization of light? Write any four applications of interference of light. Illustrate how plane polarized light obtained by reflection.
A long solenoid is fabricated by closely winding a wire of radius 0.5 mm over a cylindrical nonmagnetic frame so that the successive turns nearly touch every other. What would be t
a boy jumps from height of 100m?what will be its velocity when it reaches ground?
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