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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)
state the conditions under which two forces form a couple and give an example of couple
A coil of inductance 159.2mH and resistance 40 is connected in parallel with a 30µF capacitor across a 240V, 50Hz supply. Calculate (a) the current in the coil and its phase ang
Suppose the sides of a closed polygam represent vector arrangend head to tail rule , what is sum of these vectors ?
filled observation of youngs modulus using searles apparatus
Advantages of A.C. transmission of power 1. The power can be produced at high voltages. 2. The maintenance of a.c. sub-stations is simple and cheaper. 3. The a.c. voltage
A beaker of water sits in the sun until it reaches an equilibrium temperature of 30°C. The beaker is made of 100 g of aluminum and contains 170 g of water. In an attempt to cool th
Explain the presence of unmodified radiation in Compton scattering.
What are fitting? Practically the only part of a fiber optic system which the public ever notices. End fittings are the components for fixing, supporting, finishing and aiming
Can you explain thermistor? Write short notes on back emf and internal resistance of a cell.
if length changes then there is change in the time period how to solve these questions regards
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