Physics Large astronomical telescopes always use as objective combinations of lenses lens mirror None of these combinations of lenses lens mirror None of these ANSWER DOWNLOAD EXAMIANS APP
Physics Electron microscope works on which of the following principles? Faraday's law of Electromagnetic induction Motion of charged particle in electromagnetic fields Wave Nature of electrons Optical interference Faraday's law of Electromagnetic induction Motion of charged particle in electromagnetic fields Wave Nature of electrons Optical interference ANSWER DOWNLOAD EXAMIANS APP
Physics Lightning heats the surrounding air to 3000 deg Cent 300 deg Cent 30000 deg Cent 300000 deg Cent 3000 deg Cent 300 deg Cent 30000 deg Cent 300000 deg Cent ANSWER DOWNLOAD EXAMIANS APP
Physics A spherical ball made of steel when dropped in mercury container Will be on the surface of mercury Will be partly immersed mercury Will dissolve in mercury Sink in mercury Will be on the surface of mercury Will be partly immersed mercury Will dissolve in mercury Sink in mercury ANSWER DOWNLOAD EXAMIANS APP
Physics Find the current (in A) when a charge of 1200C flows in 6 seconds. 3600 100 7200 200 3600 100 7200 200 ANSWER DOWNLOAD EXAMIANS APP
Physics Working of safety fuses depends upon1. magnetic effect of the current2. chemical effect of the current3. magnitude of the current4. heating effect of the currentSelect the correct answer using the code given below. 1, 2, 3 and 4 3 and 4 only 4 only 1, 2 and 3 only 1, 2, 3 and 4 3 and 4 only 4 only 1, 2 and 3 only ANSWER DOWNLOAD EXAMIANS APP
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