Physics A decibel is The wavelength of noise A musical note A measure of sound level A musical instrument The wavelength of noise A musical note A measure of sound level A musical instrument ANSWER DOWNLOAD EXAMIANS APP
Physics Optical fibre works on the principle of refraction interference total internal reflection scattering principle of refraction interference total internal reflection scattering ANSWER DOWNLOAD EXAMIANS APP
Physics The amount of matter in a ball of steel is its : Volume Mass Weight Density Volume Mass Weight Density ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following liquids has the least density ? Salt water Petrol Mercury Fresh water Salt water Petrol Mercury Fresh water ANSWER DOWNLOAD EXAMIANS APP
Physics If ice floating on water in a vessel melts, the water level in the vessel ________ . Decreases Does not change Increases First increases before decreasing Decreases Does not change Increases First increases before decreasing 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 frequency of X-ray photon is higher than the frequency of visible radiation photon. Both the photons have different energies. 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 The frequency of X-ray photon is higher than the frequency of visible radiation photon. Both the photons have different energies. 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 ANSWER DOWNLOAD EXAMIANS APP
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