Physics A convex mirror of focal length f (in air) is immersed in a liquid (u=4/3). The focal length of the mirror in the liquid will be : (3/4)f (4/3)f F (7/3)f (3/4)f (4/3)f F (7/3)f ANSWER DOWNLOAD EXAMIANS APP
Physics A fountain pen works on the principle of Flow of liquids from higher to lower potential Viscosity of liquids Bernoulli's principle Capillary action Flow of liquids from higher to lower potential Viscosity of liquids Bernoulli's principle Capillary action ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following are used for accurately measuring very small time intervals ? Pulsars Atomic clocks Quartz clocks White dwarfs Pulsars Atomic clocks Quartz clocks White dwarfs ANSWER DOWNLOAD EXAMIANS APP
Physics Which layer of the earth's atmosphere reflect back the radio waves to the earth's surface ? Exosphere Ionosphere Mesosphere Stratosphere Exosphere Ionosphere Mesosphere Stratosphere ANSWER DOWNLOAD EXAMIANS APP
Physics The base of an electric iron is brightly polished mainly To make it smooth and frictionless To make it more durable To reduce heat loss by radiation To make it rust-proof To make it smooth and frictionless To make it more durable To reduce heat loss by radiation To make it rust-proof ANSWER DOWNLOAD EXAMIANS APP
Physics It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because Resultant weight of buckets is zero Weights of buckets are balanced Centre of gravity falls within the body Centre of gravity and centre of equilibrium fall within the feet Resultant weight of buckets is zero Weights of buckets are balanced Centre of gravity falls within the body Centre of gravity and centre of equilibrium fall within the feet ANSWER DOWNLOAD EXAMIANS APP
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