Physics RADAR is used for: locating geostationary satellites. detecting and locating the position of objects such as Aeroplanes. locating submerged submarines. receiving a signals in a radio receiver. locating geostationary satellites. detecting and locating the position of objects such as Aeroplanes. locating submerged submarines. receiving a signals in a radio receiver. ANSWER DOWNLOAD EXAMIANS APP
Physics In a refrigerator what produces the cooling ? The sudden expansion of a compressed gas The ice which deposits on the freezer The evaporation of a volatile liquid None of these The sudden expansion of a compressed gas The ice which deposits on the freezer The evaporation of a volatile liquid None of these ANSWER DOWNLOAD EXAMIANS APP
Physics Choose the most appropriate answer: Sir CV Raman was awarded Noble Prize for his work connected with which of the following phenomenon of radiation? Diffraction Interference Scattering Polarization Diffraction Interference Scattering Polarization ANSWER DOWNLOAD EXAMIANS APP
Physics The threshold frequency is the frequency below which : Photo current is constant Photo current decreases with voltage Photo current increases with voltage Photo electric emission is not possible Photo current is constant Photo current decreases with voltage Photo current increases with voltage Photo electric emission is not possible ANSWER DOWNLOAD EXAMIANS APP
Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly Absorb heat from the atmosphere send it towards earth Produce heat and radiate it toward earth Prevent cold waves from the sky descending on earth Reflect back the heat given by earth Absorb heat from the atmosphere send it towards earth Produce heat and radiate it toward earth Prevent cold waves from the sky descending on earth Reflect back the heat given by earth ANSWER DOWNLOAD EXAMIANS APP
Physics Pipelines in cold countries often burst in winter, because Pipelines expand due to freezing Temperature of ice is less than that of water Water freezes and expands in its volume Pipelines contract in their volume Pipelines expand due to freezing Temperature of ice is less than that of water Water freezes and expands in its volume Pipelines contract in their volume ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS