Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly Prevent cold waves from the sky descending on earth Absorb heat from the atmosphere send it towards earth Produce heat and radiate it toward earth Reflect back the heat given by earth Prevent cold waves from the sky descending on earth Absorb heat from the atmosphere send it towards earth Produce heat and radiate it toward earth Reflect back the heat given by earth ANSWER DOWNLOAD EXAMIANS APP
Physics Materials for rain-proof coats and tents owe their water-proof properties to viscosity specific gravity elasticity surface tension viscosity specific gravity elasticity surface tension ANSWER DOWNLOAD EXAMIANS APP
Physics Choose the most appropriate answer: In which atmospheric layer are the communication satellites located? Stratosphere Troposphere Mesosphere Ionosphere Stratosphere Troposphere Mesosphere Ionosphere ANSWER DOWNLOAD EXAMIANS APP
Physics An object covers distance which is directly proportional to the square of the time. Its accelaration is Increasing Decreasing Zero Constant Increasing Decreasing Zero Constant ANSWER DOWNLOAD EXAMIANS APP
Physics The dimension of Planck constant equals to that of Energy Power Momentum Angular momentum Energy Power Momentum Angular momentum ANSWER DOWNLOAD EXAMIANS APP
Physics Which type of radiation has the lowest penetrating ability? Beta Alpha Gamma All of these Beta Alpha Gamma All of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS