Physics After long periods of use, a grey spot develops on the inside of a bulb. This is because Glass undergoes a change due to the heat The heat of the bulb scorches the glass at the top The tungsten filament evaporates and collects there Dust inside the bulb condenses on the top Glass undergoes a change due to the heat The heat of the bulb scorches the glass at the top The tungsten filament evaporates and collects there Dust inside the bulb condenses on the top ANSWER DOWNLOAD EXAMIANS APP
Physics A convex mirror of focal length f (in air) is immersed in a liquid (u=4/3). The focal length of the mirror in the liquid will be : (7/3)f (4/3)f (3/4)f F (7/3)f (4/3)f (3/4)f F ANSWER DOWNLOAD EXAMIANS APP
Physics In Astrophysics, what name is given to a hypothetical hole in outer space from which stars and energy emerge? Ozone hole White hole Black hole Asteroid belt Ozone hole White hole Black hole Asteroid belt ANSWER DOWNLOAD EXAMIANS APP
Physics A copper wire of radius r and length l has a resistance of R. A second copper wire with radius 2r and length l is taken and the two wires are joined in a parallel combination. The resultant resistance of the parallel combination of the two wires will be 5 R/4 5 R R/5 4 R/5 5 R/4 5 R R/5 4 R/5 ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fibre works on which of the following principle of light? Diffraction Reflection Refraction Total internal reflection Diffraction Reflection Refraction Total internal reflection ANSWER DOWNLOAD EXAMIANS APP
Physics The first law of thermodynamics is simply the case of Charle's law Newton's law of cooling The law of conservation of energy The law of heat exchange Charle's law Newton's law of cooling The law of conservation of energy The law of heat exchange ANSWER DOWNLOAD EXAMIANS APP
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