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The electromagnetic wave is going in free space with electricvector. How much average energy is passing through a rectangular hole of length 3 cm and width 1.5 cm inxyand in yz plane taken independently?
The wave nature of light is demonstrated by which of the following a) The photoelectric effect b) Colour c) The speed of light d) Diffraction Ans: The w
explain with the aid of a diagram what is meant by the moment of a force about point
An object which does not get its actual configuration at all on the removal of deforming force, though short the deforming force can be is a perfectly plastic body.
Explain 'drift velocity of free electrons'? Derive Ohm's law on the basis of the theory of electron drift.
A medium is known as denser if the velocity of ray in that phase is fewer than the speed of the wave in other phase. In comparison to air velocity of sound is main in water,
A simple inclined plane Join a spring balance to a toy car or roller skate and pull it up a slanting board (inclined plane). Note the force needed to move the car and compare i
Define free vector
Determine the angle of incidence for a ray of light to have minimum deviation of 39040' in equilateral prism.
Red light (λ = 685 nm) falls on a slit that is 0.025 mm wide. The distance between the centers of the central bright band and the second-order dark band is 6.3 cm. What is
a closed organ pipe resonates with frequency 6hz and an open organ pipe resonates with frequency 12Hz. if the two organ pipes are joined to form a single organ pipe then it will re
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