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(a) State the postulate of STR and deduce Lorentz Transformation.
OR
Give basic postulate of special theory of relativity. Derive Lorentz Transformation equations.
(b) Prove that particle having rest mass zero is always moving with velocity of light.
How does the distance between fringes in Young's double slit experiment change. a) If the colour of the light is changed from red to blue? b) If the slit separation is incre
Fermat's principle; principle of least time (P. de Fermat): The principle put by P. de Fermat, which states the path taken through a ray of light among any two points into a s
A quantity that can be calculated by instrument, clearly defined and has proper units is known as physical value. Physical quantities are described as fundamental and derived quant
what is kinetics
What are the needs of light sources for fibre optic communication? Light sources for fibre optic communication should meet certain given requirements as illustrated below: a
Q. Compare the emf and the potential difference . Comparison of emf and potential difference 1. The difference of potentials among the two terminals of a cell in an open cir
A fishing line's lead sinker has a volume of 1.40 x 10 -5 m 3 . The density of lead is 1.2 x 10 4 kg/m 3 . What is the apparent weight of the sinker when immersed in freshwat
Working
A rectangular coil of sides 8cm by 6cm is rotating in a magnetic field such that the longer sides cut the magnetic field. Calculate the maximum generated e.m.f. if there are 6
Explain the Resonance of Sound in Air Columns Wind instruments use vibrations in air columns to generate notes. The end that air is blown into is all time considered an open en
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