Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly Absorb heat from the atmosphere send it towards earth Prevent cold waves from the sky descending on earth Produce heat and radiate it toward earth Reflect back the heat given by earth Absorb heat from the atmosphere send it towards earth Prevent cold waves from the sky descending on earth Produce heat and radiate it toward earth Reflect back the heat given by earth ANSWER DOWNLOAD EXAMIANS APP
Physics A rear-view mirror for driving is Convex Plain Inverted Concave Convex Plain Inverted Concave ANSWER DOWNLOAD EXAMIANS APP
Physics Sound waves do not show the phenomenon of Interference Polarisation Refraction Diffraction Interference Polarisation Refraction Diffraction ANSWER DOWNLOAD EXAMIANS APP
Physics When number of turns in a coil is trippled, without any change in the length of coil, its self inductance becomes? Six times One–third Three times Nine times Six times One–third Three times Nine times ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following wavelengths of light is most effective in photosynthesis ? Orange Green Yellow Blue Orange Green Yellow Blue ANSWER DOWNLOAD EXAMIANS APP
Physics Decibel is the unit used for Intensity of sound Speed of light Radio wave frequency Intensity of heat Intensity of sound Speed of light Radio wave frequency Intensity of heat ANSWER DOWNLOAD EXAMIANS APP
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