Physics Fiber optics cable used in communication, works on the principle of Total internal reflection of light Diffuse reflection of light Refraction of light Regular reflection of light Total internal reflection of light Diffuse reflection of light Refraction of light Regular reflection of light ANSWER DOWNLOAD EXAMIANS APP
Physics In an optical fibre the signal is transmitted Due to total internal reflection In a straight line path In a curved path Due to refraction Due to total internal reflection In a straight line path In a curved path Due to refraction ANSWER DOWNLOAD EXAMIANS APP
Physics Out of the following, which is not emitted by radioactive substance? Neutrons Electromagnetic radiations Alpha particles Electrons Neutrons Electromagnetic radiations Alpha particles Electrons ANSWER DOWNLOAD EXAMIANS APP
Physics Unit of impedance is ________ Henry Ohm Hertz Tesla Henry Ohm Hertz Tesla ANSWER DOWNLOAD EXAMIANS APP
Physics Large astronomical telescopes always use as objective lens mirror combinations of lenses None of these lens mirror combinations of lenses None of these ANSWER DOWNLOAD EXAMIANS APP
Physics If ice floating on water in a vessel melts, the water level in the vessel ________ . Decreases Does not change First increases before decreasing Increases Decreases Does not change First increases before decreasing Increases ANSWER DOWNLOAD EXAMIANS APP
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