Physics In mirrors the back surface is coated with a thin layer of : Silver Mercury Red oxide Silver nitrate Silver Mercury Red oxide Silver nitrate ANSWER DOWNLOAD EXAMIANS APP
Physics A photon of X-ray has energy of 1 keV. A photon of visible radiation has energy of 3 eV. In this context, which one of the following statements is not correct? The speeds of both the photons in vacuum are different Both the photons have different energies. The frequency of X-ray photon is higher than the frequency of visible radiation photon. The wavelength of X-ray photon is less than the wavelength of visible radiation photon. The speeds of both the photons in vacuum are different Both the photons have different energies. The frequency of X-ray photon is higher than the frequency of visible radiation photon. The wavelength of X-ray photon is less than the wavelength of visible radiation photon. ANSWER DOWNLOAD EXAMIANS APP
Physics A hydrogen balloon floats up because of Air pressure decreases with decrease in height Weight of the balloon is less than the weight of air displaced by it. Air pressure decreases with decrease in weight The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in height Weight of the balloon is less than the weight of air displaced by it. Air pressure decreases with decrease in weight The pressure inside the balloon is more than the pressure outside it ANSWER DOWNLOAD EXAMIANS APP
Physics Lens is made up of Pyrex glass Cobalt glass Flint glass Ordinary glass Pyrex glass Cobalt glass Flint glass Ordinary glass ANSWER DOWNLOAD EXAMIANS APP
Physics A ball rolling along the ground gradually slows down and finally comes to rest is due to ________ Electrostatic force Friction Magnetic force Muscular force Electrostatic force Friction Magnetic force Muscular force ANSWER DOWNLOAD EXAMIANS APP
Physics In a railway track, two rails are joined end to end with a gap in between them because Accidents due to contraction in winter can be avoided Air-gaps are necessary for bearing the weight of running train Accidents due to expansion in summer can be avoided Steel can be saved Accidents due to contraction in winter can be avoided Air-gaps are necessary for bearing the weight of running train Accidents due to expansion in summer can be avoided Steel can be saved ANSWER DOWNLOAD EXAMIANS APP
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