Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly 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 Prevent cold waves from the sky descending on earth Absorb heat from the atmosphere send it towards earth ANSWER DOWNLOAD EXAMIANS APP
Physics The damage of the human body due to radiation (X-rays or grays etc,) is measured in : Rads Roentgen Rems Curie Rads Roentgen Rems Curie ANSWER DOWNLOAD EXAMIANS APP
Physics Which best describes how air moves during convection? Cool air falls down Warm air falls down Air always falls down Cool air is replaced by warm air Cool air falls down Warm air falls down Air always falls down Cool air is replaced by warm air ANSWER DOWNLOAD EXAMIANS APP
Physics Period of oscillation of 3 cm microwaves in seconds is 1 × 1010 0.01 0.001 1 × 10–10 1 × 1010 0.01 0.001 1 × 10–10 ANSWER DOWNLOAD EXAMIANS APP
Physics Momentum is measured as the product of : Mass and acceleration Mass and velocity Mass and force Mass and inertia Mass and acceleration Mass and velocity Mass and force Mass and inertia ANSWER DOWNLOAD EXAMIANS APP
Physics The propagation of sound waves in a gas involves Adiabatic compression and rarefaction Isobaric compression and rarefaction Isochoric compression and rarefaction Isothermal compression and rarefaction Adiabatic compression and rarefaction Isobaric compression and rarefaction Isochoric compression and rarefaction Isothermal compression and rarefaction ANSWER DOWNLOAD EXAMIANS APP
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