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A concave lens when given in air has a focal length of 0.4 m and has a refractive index of 3/2. Evaluate its focal length when immersed in water of refractive index 4/3?
Describe Fresnel''s theory of optical rotation
what are advantages of identifying the center of gravity
While music is on you will try to oppose the two ear phone pieces to attract. Task-I: Will they attract? If yes, why so?
THOMSON'S ATOMIC MODEL:- According to Thomson's atomic model positive charge is distributed uniformly over the entire body of the atom while the electrons are embedded in it. S
A proton and an alpha particle pass by the gap of a strong magnet. If both particles have the similar initial velocity, how many times greater will the defection of the proto
Electric field (intensity) is a vector number. Electric field because of a positive particle is always away from the charge and that because of a negative charge is always toward
(i) It having of dissimilar bright lines. (ii) It is given by an excited source in atomic state. (iii)E.g. Spectrum of excited helium, mercury vapours sodium vapours or atomi
A plane e-m wave propagates horizontally from east to west. If the magnetic field related with the wave, at a point in its path, is towards north, what is the direction of related
Wave motion is the phenomenon in which the particle/matter ruins at the point where it is. But the disturbance/energy get transferred from one point to the other. The particle ju
In the nucleus of 20 Ca 40 there are: (1) 40 protons and 20 electrons (2) 20 protons and 40 electrons (3) 20 protons and 20 neutrons (4) 20 protons and 40 neutrons
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