Physics Which among the following waves is used for communication by artificial satellites ? M. Radio waves Micro waves Frequency of 1016 series M. Radio waves Micro waves Frequency of 1016 series 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? Both the photons have different energies. 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. The wavelength of X-ray photon is less than the wavelength of visible radiation photon. Both the photons have different energies. 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. The wavelength of X-ray photon is less than the wavelength of visible radiation photon. ANSWER DOWNLOAD EXAMIANS APP
Physics A dynamo is a device which Converts electrical energy into mechanical energy Creates mechanical energy Converts mechanical energy into electrical energy Creates electrical energy Converts electrical energy into mechanical energy Creates mechanical energy Converts mechanical energy into electrical energy Creates electrical energy ANSWER DOWNLOAD EXAMIANS APP
Physics Positive feedback is used in Rectifiers None of these Amplifiers Oscillators Rectifiers None of these Amplifiers Oscillators ANSWER DOWNLOAD EXAMIANS APP
Physics Which is the point from where an azimuth originates? West North East South West North East South ANSWER DOWNLOAD EXAMIANS APP
Physics The layer of atmosphere used for radio-wave transmission is Ionosphere Stratosphere Chromosphere Troposphere Ionosphere Stratosphere Chromosphere Troposphere ANSWER DOWNLOAD EXAMIANS APP
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