Physics Parabolic mirrors are used in Dentists mirros Driving mirrors Car headlights Shaving mirros Dentists mirros Driving mirrors Car headlights Shaving mirros ANSWER DOWNLOAD EXAMIANS APP
Physics If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? Depends upon the metal Increases Decreases Unchanged Depends upon the metal Increases Decreases Unchanged ANSWER DOWNLOAD EXAMIANS APP
Physics A body of mass 5 kg accelerates from 12 m/s to 20 m/s in 4 seconds due to the application of a force on it. Calculate the magnitude of this force (in N). 10 80 40 20 10 80 40 20 ANSWER DOWNLOAD EXAMIANS APP
Physics A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat? Conduction and convection only Conduction and radiation only Conduction, convection and radiation Convection and radiation only Conduction and convection only Conduction and radiation only Conduction, convection and radiation Convection and radiation only ANSWER DOWNLOAD EXAMIANS APP
Physics Magnetic keepers are used to protect magnets from : Earth's magnetic field Self-demagnetization Effect of other magnets Demagnetization due to heating Earth's magnetic field Self-demagnetization Effect of other magnets Demagnetization due to heating ANSWER DOWNLOAD EXAMIANS APP
Physics Shock-absorbers are usually made of steel as it : Has no ductile property Has higher elasticity Has lower elasticity Is not brittle Has no ductile property Has higher elasticity Has lower elasticity Is not brittle ANSWER DOWNLOAD EXAMIANS APP
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