Physics Which one of the following is responsible for the working of Newton's colour disc experiment ? Formation of pure spectra Persistence of vision Formation of impure spectra Principle of complementary colour Formation of pure spectra Persistence of vision Formation of impure spectra Principle of complementary colour ANSWER DOWNLOAD EXAMIANS APP
Physics Rainbow is due to diffusion of sunlight through water droplets refraction and reflection of sunlight by water droplets ionisation of water deposits absorption of sunlight in minute water droplets diffusion of sunlight through water droplets refraction and reflection of sunlight by water droplets ionisation of water deposits absorption of sunlight in minute water droplets ANSWER DOWNLOAD EXAMIANS APP
Physics The velocity of sound in air Does not depend on temperature Decreases with decrease of temperature Increases with decrease of temperature Decreases with increase of temperature Does not depend on temperature Decreases with decrease of temperature Increases with decrease of temperature Decreases with increase of temperature ANSWER DOWNLOAD EXAMIANS APP
Physics We feel cool when we sit near the fan, this is because We feel cool when air touches the body. Air vapourises the sweat on our body. Fan gives cool air. Fan cools surrounding air. We feel cool when air touches the body. Air vapourises the sweat on our body. Fan gives cool air. Fan cools surrounding air. ANSWER DOWNLOAD EXAMIANS APP
Physics Which type of radiation has the lowest penetrating ability? Alpha All of these Gamma Beta Alpha All of these Gamma Beta ANSWER DOWNLOAD EXAMIANS APP
Physics A decibel is The wavelength of noise A musical instrument A musical note A measure of sound level The wavelength of noise A musical instrument A musical note A measure of sound level ANSWER DOWNLOAD EXAMIANS APP
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