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Hubble's law (E.P. Hubble; 1925):
A relationship discovered among distance & radial velocity. Further away a galaxy is away from is, the quicker it is receding away from us. The constant of proportionality is Hubble constant, H0. The cause is interpreted such as the expansion of spacetime itself.
Penetration power of proton is: (1)More than electron (2)Less than electron (3)More than neutron (4)None Ans:(2)Less than electron
It is based on the principle that conductivity of a semiconductor enhances with increase in the intensity of incident light. In this, a thin layer of some semiconductor (as
Q. What is the use of control rods? Mention any two control rods. The control rods are utilized to control the chain reaction. They are extremely good absorbers of neutrons. Th
A boy throws a ball of mass 20 kg vertically upwards.It raises to a maximum height of 100 m.At what height will the kinetic energy be reduced to 70%?
Q. In Young's double slit experiment the distance between the slits is 1.9 mm. The distance between the slit and the screen is 1 m. If the bandwidth is 0.35 mm Compute the waveleng
The Diamond Structure The diamond cubic structure is a distinctive of materials that have its constituent materials bound in tetrahedral bonds. Insulators like carbon, semicon
a ball is dropped from a bridge 122.5m high. after the ball has been falling for2 sec another is thrown straight downwards after it. the initial velocity of the ball is such that
For germanium the forbidden gap is (A) 0.15ev. (B) 0.25ev. (C) 0.5ev. (D) 0.7ev. Ans: For germanium the forbidden gap is 0.7ev.
Working of Current Time base generator
Trying to make an interesting pattern, an artist slowly pours 1.00 cm 3 of liquid gold onto a large block of ice at 0.00°C. While being poured, the liquid gold is at its melt
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