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Yes it is possible at the centre of the earth where the radius is zero .
Q. An object of size 3.0 cm is placed 14cm in front of a concave lens of focal length 21 cm. Describe the image produced by the lens. What happens if the object is moved further aw
A metal has a work function of 4.80 eV. Will ultraviolet radiation with a wave length of 385 nm be able to eject a photoelectron from the metal?
Q. Give basic postulate of special theory of relativity? A plane-convex lenses L of large radius of curvature with its convexities is placed on a plane glass plate P. When ligh
Q. Geosynchronous Orbit Communications satellites are able to be placed in equatorial orbits at a distance which results in an orbital period of one day. Therefore the satellit
(a) Distinguish among metals, insulators and semiconductors on the basis of their energy bands. (b) Why are photodiodes used preferably in reverse bias condition? A photodiode i
A negative point charge of 10 -6 coulomb is located in air at the origin of a rectangular coordinate system. A second negative point charge of 10 -4 is situated on the positive x
What are the conditions to get interference pattern having good contrast in young's double slit experiment
On the way to school, Jamal realizes that he left his physics homework at house. His car was initially heading north at 24.0 m/s. It takes him 35.5 s to turn his car around and hea
(i) The procedure of ejection of electrons from a metal surface by the application of heat is known as thermionic emission and emitted electrons are known as thermions and current
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