Physics The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because There is no air or any other gas in the bell jar The ringing is not loud enough The bell jar is too small The glass of the bell jar absorbs the sound waves There is no air or any other gas in the bell jar The ringing is not loud enough The bell jar is too small The glass of the bell jar absorbs the sound waves ANSWER DOWNLOAD EXAMIANS APP
Physics In a filament type light bulb most of the electric power consumed appears as Fluorescent light Infra-red rays Ultra-violet rays Visible light Fluorescent light Infra-red rays Ultra-violet rays Visible light ANSWER DOWNLOAD EXAMIANS APP
Physics Who among the following discovered X-rays? W.C Roentgen J.J Thomson James Chadwick Marie Curie W.C Roentgen J.J Thomson James Chadwick Marie Curie ANSWER DOWNLOAD EXAMIANS APP
Physics The laws which govern the motion of planets are called ________ Kepler's Laws Avogadro's laws Newton's Laws De Morgan's Laws Kepler's Laws Avogadro's laws Newton's Laws De Morgan's Laws ANSWER DOWNLOAD EXAMIANS APP
Physics The instrument for measuring intensity of earthquakes is called Ediograph Ergograph Seismograph Pantagraph Ediograph Ergograph Seismograph Pantagraph 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 wavelength of X-ray photon is less than the wavelength of visible radiation photon. Both the photons have different energies. The frequency of X-ray photon is higher than the frequency of visible radiation photon. The speeds of both the photons in vacuum are different The wavelength of X-ray photon is less than the wavelength of visible radiation photon. Both the photons have different energies. The frequency of X-ray photon is higher than the frequency of visible radiation photon. The speeds of both the photons in vacuum are different ANSWER DOWNLOAD EXAMIANS APP
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