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The correct answer is C
A light ray enters a glass slab from air at 60° incidence. If refractive index of glass is √3, what is angle of refraction?
What is the process of melting also called?
A piece of ice is floating in water kept in a beaker. When all the ice melts the level of water will -
The unit 'Weber' is associated with which of the following?
What is the main principle behind the working of an electric motor?
A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involves:
A block of mass 10 kg is on a horizontal table with friction coefficient μ = 0.2. A mass of 4 kg is suspended from a frictionless pulley attached to th...
If radius of earth is R then the height ‘h’ at which the value of ‘g’ becomes one-fourth is-
According to Kepler’s third law of planetary motion, the square of the orbital period of a planet is proportional to the __________.
A metallic conductor of circular cross-section has radius R. If current density varies as J = Jₒ(1−r/R), the total current through the conductor is:...