Physics Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this? I.Diffusion II.Refraction III.Internal reflection I and III I and II II and III I, II and III I and III I and II II and III I, II and III ANSWER DOWNLOAD EXAMIANS APP
Physics The wall of a dam is broader at the base To withstand pressure that increases with depth To withstand pressure that is increased with atmospheric pressure Because streamlining is required To withstand pressure that increases in a horizontal plane To withstand pressure that increases with depth To withstand pressure that is increased with atmospheric pressure Because streamlining is required To withstand pressure that increases in a horizontal plane ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is not true about X-rays? Have low penetrating power Travel with the speed of light Can be reflected or refracted Can affect photographic plates Have low penetrating power Travel with the speed of light Can be reflected or refracted Can affect photographic plates ANSWER DOWNLOAD EXAMIANS APP
Physics When a person sitting on a swing stands up on the swing, the frequency of oscillation Becomes infinite Decreases Increases Does not change Becomes infinite Decreases Increases Does not change ANSWER DOWNLOAD EXAMIANS APP
Physics The energy that generates wind comes from what source? Solar radiation Ocean currents None of these Anemometers Solar radiation Ocean currents None of these Anemometers ANSWER DOWNLOAD EXAMIANS APP
Physics The centre of gravity of a sprinter during the race lies Behind his feet To the left side of the body At the centre of the body Ahead of his feet Behind his feet To the left side of the body At the centre of the body Ahead of his feet ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS