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The energy emitted by the Sun is primarily due to what process?
The distance between the focus and the centre of curvature of a spherical mirror in terms of the radius of curvature R, is equal to:
Two long parallel wires 2 cm apart carry 5 A and 3 A currents in the same direction. What is the force per unit length on one wire?
A rubber ball is dropped from a height of 2 metres. To what height will it rise if there is no loss of energy/velocity after rebounding?
Which of the following statements is incorrect for a Zener diode in breakdown region?
A 220 V, 50 Hz AC supply is connected across a coil of resistance 10 Ω and inductance 0.1 H. Calculate the power consumed in the coil.
A particle starts from rest and accelerates uniformly at 2 m/s² for 10 seconds, then moves with constant velocity for 5 seconds, and finally decelerat...
Which of the following statement is true for a wavelength of 1000 nm. A p-n photodiode is fabricated from a semiconductor with band gap of 1.9 eV.
A particle is moving along a circular path of radius r with constant speed. The acceleration of the particle is:
A sphere of radius 1m encloses a charge of 10μC. Another charge of −5μC is placed inside the sphere. The net electric flux would be :