Physics Which best describes how air moves during convection? Air always falls down Warm air falls down Cool air falls down Cool air is replaced by warm air Air always falls down Warm air falls down Cool air falls down Cool air is replaced by warm air ANSWER DOWNLOAD EXAMIANS APP
Physics A vacuum cleaner works on the principle of pressure difference. On the moon it will Not work at all Work with increased efficiency Work as efficiently as on the earth Work with reduced efficiency Not work at all Work with increased efficiency Work as efficiently as on the earth Work with reduced efficiency ANSWER DOWNLOAD EXAMIANS APP
Physics In an optical fibre the signal is transmitted In a curved path Due to total internal reflection Due to refraction In a straight line path In a curved path Due to total internal reflection Due to refraction In a straight line path ANSWER DOWNLOAD EXAMIANS APP
Physics The earth is a Good reflector of heat Non-absorber of heat Good absorber and good radiator of heat Bad absorber and bad radiator of heat Good reflector of heat Non-absorber of heat Good absorber and good radiator of heat Bad absorber and bad radiator of heat ANSWER DOWNLOAD EXAMIANS APP
Physics Ozone layer above the surface of Earth provides a shield against X-rays Infra-red rays Ultra-violet rays Gamma rays X-rays Infra-red rays Ultra-violet rays Gamma rays ANSWER DOWNLOAD EXAMIANS APP
Physics Light from the Sun reaches us in nearly 8 minutes 4 minutes 16 minutes 2 minutes 8 minutes 4 minutes 16 minutes 2 minutes ANSWER DOWNLOAD EXAMIANS APP
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