Physics Which of the following cannot be used for making lenses? Soil Water Plastic Glass Soil Water Plastic Glass 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 : F (3/4)f (4/3)f (7/3)f F (3/4)f (4/3)f (7/3)f ANSWER DOWNLOAD EXAMIANS APP
Physics When hot liquid is poured into a thick glass tumbler, it cracks because glass : Has a very low specific heat Has low temperature coefficient of expansion Has high temperature coefficient of expansion Is a bad conductor of heat so only inner surface expands Has a very low specific heat Has low temperature coefficient of expansion Has high temperature coefficient of expansion Is a bad conductor of heat so only inner surface expands ANSWER DOWNLOAD EXAMIANS APP
Physics A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be < P > P 2P P < P > P 2P P ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following group of elements are diamagnetic? Hydrogen, oxygen, Argon Argon, copper, silver Hydrogen, argon, copper Oxygen, copper, silver Hydrogen, oxygen, Argon Argon, copper, silver Hydrogen, argon, copper Oxygen, copper, silver ANSWER DOWNLOAD EXAMIANS APP
Physics Holography is a technique of Recording a permanent three dimensional black and white photograph Recording a permanent, sharp two diimensional black and white or multicolour photograph Recording a permanent three dimensional photograph of a given single colour or a multicolour Recording a permanent three dimensional multicolour photograph Recording a permanent three dimensional black and white photograph Recording a permanent, sharp two diimensional black and white or multicolour photograph Recording a permanent three dimensional photograph of a given single colour or a multicolour Recording a permanent three dimensional multicolour photograph ANSWER DOWNLOAD EXAMIANS APP
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