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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 does it work?
When a certain beam of light falls upon a metal surface, it ejects photoelectrons from it. The number of photoelectrons ejected per second by the beam of light depends upon on
Fig.of conical prism
what are the various types of tops ?
Regard as two charged particles. At a given separation every particle exerts a force of 12 N on the other. What force does every one exert on the other after someone moves the part
Relativistic Length Contraction The animations that were given below depict these phenomena of length contraction. In every animation a spaceship is moving past Earth at a high
A 250 N crate is sitting on a 30 degree inclined plane. The frictional force is larger than the component of the crate's weight parallel to the inclined plane, so that the crate do
describe young''s double slits experiments for interference of light ?
The magnetic induction at a point 15 cm from a long straight wire carrying a current is 4 X 10 -6 T Compute the current. (J - 12) B = μ o I/2πa I = 2πa X B/μo Current I
Radiation Hazards: 1. They can injure our body cells. 2. Excessive radiation might be cause cancer. 3. Energetic radiation penetrates inside the body and can cause other
explain the construction and working of compound microscope
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