Physics Ball bearings are used in cycles, scooters etc to Reduce the friction between the wheel and the axle None of these Increase the friction between the wheel and the axle Reduce the friction between ground and the whee Reduce the friction between the wheel and the axle None of these Increase the friction between the wheel and the axle Reduce the friction between ground and the whee ANSWER DOWNLOAD EXAMIANS APP
Physics Sound waves in air are longitudinal polarised electromagnetic transverse longitudinal polarised electromagnetic transverse ANSWER DOWNLOAD EXAMIANS APP
Physics A periscope works on the principle of Reflection Total internal reflection Refraction Diffraction Reflection Total internal reflection Refraction Diffraction ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is used to split white light into different colours ? Prism Glass slab Convex lens Concave lens Prism Glass slab Convex lens Concave lens ANSWER DOWNLOAD EXAMIANS APP
Physics 1 m/s equals ________ km/hr 43969 43967 16/5 18/5 43969 43967 16/5 18/5 ANSWER DOWNLOAD EXAMIANS APP
Physics If there is a circular hole in a metal plate, what happens to the radius of the hole when the plate is heated? Unchanged Decreases Depends upon the metal Increases Unchanged Decreases Depends upon the metal Increases ANSWER DOWNLOAD EXAMIANS APP
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