Physics Why is it difficult to breathe at higher altitudes? Due to ozone Due to low temperature Due to high humidity Due to low air pressure Due to ozone Due to low temperature Due to high humidity Due to low air pressure ANSWER DOWNLOAD EXAMIANS APP
Physics Stars appear twinkling because of ......... of light. Reflection Absorption Scattering Emission Reflection Absorption Scattering Emission ANSWER DOWNLOAD EXAMIANS APP
Physics If the temperature of a place increases suddenly, the relative humidity Fluctuates Decreases Remains constant Increases Fluctuates Decreases Remains constant Increases ANSWER DOWNLOAD EXAMIANS APP
Physics When a bottle of scent is kept open in a corner of a room its odour is felt in all parts of the room. This is due to the phenomenon of : Vaporisation Diffusion Sublimation Evaporation Vaporisation Diffusion Sublimation Evaporation ANSWER DOWNLOAD EXAMIANS APP
Physics Calculate the time period (in seconds) of a sound wave of wavelength 4m traveling with a speed of 500m/s 2000 0.008 0.016 1000 2000 0.008 0.016 1000 ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following liquids has the least density ? Salt water Fresh water Petrol Mercury Salt water Fresh water Petrol Mercury ANSWER DOWNLOAD EXAMIANS APP
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