Physics Which best describes how air moves during convection? Cool air is replaced by warm air Warm air falls down Cool air falls down Air always falls down Cool air is replaced by warm air Warm air falls down Cool air falls down Air always falls down ANSWER DOWNLOAD EXAMIANS APP
Physics Speed of sound is maximum in which among the following? Solids Vaccum Gases Liquids Solids Vaccum Gases Liquids ANSWER DOWNLOAD EXAMIANS APP
Physics Should cars have bumpers that collapse under impact? No, since the colliding car would then ram into the occupants and kill them No, since it would be very expensive to get the car repaired Yes, since they help to absorb the impact of a collision and keep the occupants safe Yes, since the offending car should get damaged and pay for the mistake No, since the colliding car would then ram into the occupants and kill them No, since it would be very expensive to get the car repaired Yes, since they help to absorb the impact of a collision and keep the occupants safe Yes, since the offending car should get damaged and pay for the mistake ANSWER DOWNLOAD EXAMIANS APP
Physics An electron and a proton starting from rest get accelerated through potential difference of 100 kV. The final speed of the electron and the proton are Ve and Vp respectively. Which of the following relations is correct? Ve = Vp Ve < Vp Ve > Vp Cannot be determined Ve = Vp Ve < Vp Ve > Vp Cannot be determined ANSWER DOWNLOAD EXAMIANS APP
Physics A light ray travelling from denser to rarer medium at an angle of incidence more than critical angle of concerned media pair suffers. Refraction Diffraction Total internal reflection Reflection Refraction Diffraction Total internal reflection Reflection ANSWER DOWNLOAD EXAMIANS APP
Physics Electromagnetic waves are transverse in nature is evident by Interference Reflection Diffraction Polarisation Interference Reflection Diffraction Polarisation ANSWER DOWNLOAD EXAMIANS APP
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