Physics The cover of a solar cooker is made of glass because It retains the heat inside by the green house effect It absorbs sun's rays It rediates heat better than metals It reflects sun's rays It retains the heat inside by the green house effect It absorbs sun's rays It rediates heat better than metals It reflects sun's rays ANSWER DOWNLOAD EXAMIANS APP
Physics Gasoline is useful in cars because it has Kinetic energy Chemical potential energy Gravitational potential energy Electrical potential energy Kinetic energy Chemical potential energy Gravitational potential energy Electrical potential energy ANSWER DOWNLOAD EXAMIANS APP
Physics Ice cubes are added to a glass of pure water and a glass of pure alcohol. The ice would be Floating in alcohol and sinking in water At a higher level in water At the same level in both At a higher level in alcohol Floating in alcohol and sinking in water At a higher level in water At the same level in both At a higher level in alcohol ANSWER DOWNLOAD EXAMIANS APP
Physics When a ring of metal is heated what happens to its hole ? It expands or contracts according to its coefficient of expansion It expands or contracts according to its diameter Contracts Expands It expands or contracts according to its coefficient of expansion It expands or contracts according to its diameter Contracts Expands ANSWER DOWNLOAD EXAMIANS APP
Physics A disk and a sphere of same radius but different masses roll on two inclined planes of the same altitude and length. Which one of the two objects gets to the bottom of the plane first ? Sphere Both reach at the same time Disk Depends on their masses Sphere Both reach at the same time Disk Depends on their masses ANSWER DOWNLOAD EXAMIANS APP
Physics It is more difficult to walk on a sandy road than on a concrete road because sand is soft and concreter is hard. the friction between sand and feet is more than that between concrete and feet. the sand is grainy but concrete is smooth. the friction between sand and feet is less than that between concrete and feet. sand is soft and concreter is hard. the friction between sand and feet is more than that between concrete and feet. the sand is grainy but concrete is smooth. the friction between sand and feet is less than that between concrete and feet. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS