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Bohr given a model for hydrogen molecule which is also applicable for some lighter atoms in which a one electron revolves around a stationary nucleus of positive charge Ze (known as hydrogen like atom)
Bohr's model is based on the following postulates.
(i) The electron can revolve only in particular discrete non-radiating orbits, named stationary orbits, for which total angular momentum of the revolving electrons is an integral multiple of
A spacecraft is moving relative to the earth An observer on earth finds that , according to her clock 3601s elapse between 1pm and 2pm on the spacecraft''s clock. what is the space
For the circuits shown in Figure the resistors show the internal resistance of the batteries. Find, in each case: (i) The total e.m.f. across PQ (ii) The total equivalent in
A flat aluminum plate of 0.2 m thickness is initially at 120 Celsius. At time t=0, it is immersed in a liquid at 10 Celsius. Assume a very large heat transfer coefficient on both t
Common dime-store cells and batteries The cells you see in the grocery, department, drug, and hardware stores which are popular for use in household convenience items such as
1. A child pulls a toy car weighing 0.20 kg across a smooth floor by means of a string attached to it. If the string makes an angle of 60° to the floor and the child pulls with a f
Depending upon the penetration power, there are two parts of X-rays Hard X-rays More penetration power More frequency of the order of ≈ 1019 Hz Lesser wavelength range
what is the effect of torque and equilibrium on taps, doors,handle bars and bicycles??
Question: Which of the subsequent is true of the electric potential? Answer: Except for the force-per-charge choice every response is part of the definition of electric
VELOCITY: The time rate of change of displacement of a body is known as velocity. It is represented by V ?.
Q. A small candle, 2.5 cm in size is placed at 27cm in front of a concave mirror of radius of curvature 36cm. At what distance from the mirror should a screen be placed in order t
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