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Noether theorem (Noether):
A theorem which revels that symmetries are what gives increase to conserved quantities. For example, translational symmetry (the fact that the laws of physics work the similar in all places) gives increase to conservation of momentum, as position & momentum are complementary. In addition, conservation of energy is mention by time symmetry, & conservation of angular momentum is mentioned by isotropy.
Some phenomenon based on scattering: (i) Sky looks blue because of scattering. (ii) At the starting time of sunrise or sunset sun looks reddish. (iii) Danger signals are
Newton's Corpuscular Theory: Newton's corpuscular theory of light states that 1. Light is emitted form of tiny particles is known as corpuscles. 2. The corpuscles travel
A device which changes light energy into electrical energy is known as photoelectric cell. It is also known as photocell or electric eye.
A ray of light itinerant in air passes through a flat plate of glass. Refraction takes place. Where the refraction does occurs? Ans: Refraction takes places when light tra
Each particle produces a gravitational field around it which exerts the gravitational force on each of the other particles present within this region. The portion around a point ma
Describe how optical fibers used as hydrophones. Optical fibers are employed as hydrophones for sonar and seismic applications. Each hydrophone systems along with more than one
A mild steel ring has a radius of 50mm and a cross-sectional area of 400mm 2 . A current of 0.5 A flows in a coil wound uniformly around the ring and the flux formed is 0.1mWb
1]What is the difference between a photon and a neutron? 2]Why are they massless?
si el numero atomico del sodio es 11 y su numero de masa es 22,diga¿cuantos electrones,protones y neutrones respectivamente,tiene su atomo neutro?
Q. A rubber ball is dropped to the floor. What force act on the ball to bounce? Does the Earth "bounce" too? Ans. The force of the Earth pushing back on the ball causes
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