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Q. What is cut-off or stopping potential?
The minimum negative (retarding) potential specified to the anode for which the photo electric current becomes zero is called the cut-off or stopping potential.
Given a particle moving along a straight line with fixed acceleration a. Let u be the initial velocity of the particle and v be the velocity at time t. So by definition,
Consider two identical plastic foam balls each one having a thin sheath of aluminium foil. One of the balls has a few positive charges and the other has the same amount of negative
Explain the physical significance of gradient of a scalar function?
composition of two SHM at right angle to each other and having time period in the ratio of 1: 2
VELOCITY: The time rate of change of displacement of a body is known as velocity. It is represented by V ?.
Show the conditions for total internal reflection to happen. Arrive at the relation between refractive index and critical angle. What do you mean by optical fibre? on what rules do
Q. What is the principle of Millikan's oil drop method? Principle This method is foundation on the study of the motion of uncharged oil drop under free fall due to grav
Nuclear medicine imagining devices : Imagining ,or producing pictures of the distribution of the radioactivity is the most important aspect of nuclear medicine. Rectilinear s
Review guide: gases: heat, temperature, volume
Which of the following has the same mass as that of an electron: (1) Photon (2) Neutron (3) Positron (4) Proton Ans: Positron
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