Physics Which best describes how air moves during convection? Air always falls down Warm air falls down Cool air is replaced by warm air Cool air falls down Air always falls down Warm air falls down Cool air is replaced by warm air Cool air falls down ANSWER DOWNLOAD EXAMIANS APP
Physics The snow on the mountains does not melt all at once when it is heated by the sun because: It reflects most of the heat from the sun It becomes very hard It has a low specific heat capacity It has a high latent heat of fusion It reflects most of the heat from the sun It becomes very hard It has a low specific heat capacity It has a high latent heat of fusion ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following has the highest frequency? X-rays Radio waves Microwaves Cosmic rays X-rays Radio waves Microwaves Cosmic rays ANSWER DOWNLOAD EXAMIANS APP
Physics Solar cells work on the principle of Photoconductive effect Photoelectric effect Photosynthesis Photovoltaic effect Photoconductive effect Photoelectric effect Photosynthesis Photovoltaic effect ANSWER DOWNLOAD EXAMIANS APP
Physics If lift is going up with acceleration, the apparent weight of a body is Equal to the true weight Less than the true weight May be more or less than true weight More than the true weight Equal to the true weight Less than the true weight May be more or less than true weight More than the true weight ANSWER DOWNLOAD EXAMIANS APP
Physics The ''Greenhouse effect' is mainly due to increase in atmospheric Carbon dioxide Ozone Nitrogen Sulphur dioxide Carbon dioxide Ozone Nitrogen Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
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