Physics Why does'nt the hydrogen atom emit X-rays? It is highly electropositive Its energy levels are very close to each other It is very small in size It has only one electron It is highly electropositive Its energy levels are very close to each other It is very small in size It has only one electron 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
Physics Angle of friction and angle of repose are Proportional to each other Not equal to each other None of these Equal to each other Proportional to each other Not equal to each other None of these Equal to each other ANSWER DOWNLOAD EXAMIANS APP
Physics On which of the following techniques photostate machine works ? Magnetic Image—Making Electrostatic Image—Making Electromagnetic Image— Making Thermal Image—Making Magnetic Image—Making Electrostatic Image—Making Electromagnetic Image— Making Thermal Image—Making ANSWER DOWNLOAD EXAMIANS APP
Physics The quality or tone of a musical sound produced by a stringed instrument depends on Frequency of vibration Length of the strings in the instrument Wave form of the sound Amplitude of vibration Frequency of vibration Length of the strings in the instrument Wave form of the sound Amplitude of vibration ANSWER DOWNLOAD EXAMIANS APP
Physics The Capacity of a communication channel is measured in Band rate Bit capacity Data flow Band width Band rate Bit capacity Data flow Band width ANSWER DOWNLOAD EXAMIANS APP
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