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What do you mean by total internal reflection? State the conditions to be fulfilled for total internal reflection. Desfine the construction and working of an optical fibre. Sate its uses.
Explain Weightlessness When can you feel weightless? There are two basic ways. You can be far enough away from all large objects in the universe that the force of gravity due t
State parallelogram law of forces. Parallelogram Law can be assured as if two forces acting at a point are represented in magnitude and direction by the adjacent sides of a par
Centrifugal force with a beaded chain Secure a length of beaded chain like that frequently used for pull cord on electric light switches or for key chains. Fasten the ends toge
Is there any experiment to tell that water can move from lower concentration to higher Which means flows back to mountain without reversing time Could water flow upward by itself w
determine the magnitude of Poynting vector end the energy per unit time delivered to a wire of length land cross section A when electric current I flow in it
Gravitational field can also be shown by lines of force. This is same in several ways as that of electric lines of forces. With one dissimilarity, electric charges are negative and
The signal which shows the continuous variation of voltage with time is called as analog voltage signal
A copper pot with mass 0.500 kg contains 0.170 kg of water ata temperature of 20.0ºC. A 0.250-kg block of iron at85.0ºC is dropped into the pot. Find the final temperature, assumin
Calculate the heat required to melt 316.7kg of potassium metal at 336 K. The enthalpy of fusion of potassium is 2.35 kJ mol -1 .
Q. Describe the isotopes? Answer:- An atom of an element that has a diverse number of neutrons in its nucleus to other atoms of the element.
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