Physics Ball bearings are used in cycles, scooters etc to Reduce the friction between ground and the whee None of these Increase the friction between the wheel and the axle Reduce the friction between the wheel and the axle Reduce the friction between ground and the whee None of these Increase the friction between the wheel and the axle Reduce the friction between the wheel and the axle ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following is responsible for the working of Newton's colour disc experiment ? Formation of pure spectra Persistence of vision Principle of complementary colour Formation of impure spectra Formation of pure spectra Persistence of vision Principle of complementary colour Formation of impure spectra ANSWER DOWNLOAD EXAMIANS APP
Physics Intensity of any wave is proportional to which of the following? Amplitude Cube of amplitude Square of amplitude Square root of amplitude Amplitude Cube of amplitude Square of amplitude Square root of amplitude ANSWER DOWNLOAD EXAMIANS APP
Physics If a body moves with a constant speed in a circle No work is done on it No acceleration is produced in it No force acts on it Its velocity remains constant No work is done on it No acceleration is produced in it No force acts on it Its velocity remains constant ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following metals is used for the manufacture of heating elements provided in electric iron ? Nichrome Nickel Tungsten Chromium Nichrome Nickel Tungsten Chromium ANSWER DOWNLOAD EXAMIANS APP
Physics When the milk is churned vigorously the cream from it is separated out due to Centrifugal force Gravitational force Frictional force Centripetal force Centrifugal force Gravitational force Frictional force Centripetal force ANSWER DOWNLOAD EXAMIANS APP
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