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Q. A prism is made of glass of unknown refractive index. A parallel beam of light is incident on a face of the prism. The angle of minimum deviation is measured to be 40°.What is t
Refraction law: For a wavefront travelling by a boundary among two media, the first along a refractive index of n 1 , and the other with one of n, the angle of incidence thet
If a particle is projected vertically upward in a constant gravitational field with an initial speed v 0 . If there is a retarding force proportional to the square of the instantan
Will an object spinning in zero gravity in vacuum continue spinning until an external force stops it?
Two similar simple pendulums each of length ‘l' and mass ‘m' are coupled by a spring of force constant ‘k'. Write down the expression for the normal mode frequencies of the coupled
A 7.25-g bullet is fired from a gun. The muzzle velocity of the bullet is 223 m/s. Suppose that the bullet accelerates at a constant rate along the barrel of the gun before it
The big hill on a roller-coaster ride is 91 m tall. If the mass of the roller-coaster car and its two riders is 314 kg and the maximum velocity reached by this roller-coaster r
to draw v-t graph with variable retardation
A woman walks 250m in the direction 35 degrees east of north, then 170m directly east. (a) using graphical method, find her final displacement from the starting point. (b) compare
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