Physics The function of ball bearings in a wheel is : To increase friction To convert static friction into kinetic friction To convert kinetic friction into rolling friction Just for convenience To increase friction To convert static friction into kinetic friction To convert kinetic friction into rolling friction Just for convenience ANSWER DOWNLOAD EXAMIANS APP
Physics A photo-electric cell converts Mechanical energy to electric energy Light energy to electrical energy Heat energy to mechanical energy Light energy to chemical energy Mechanical energy to electric energy Light energy to electrical energy Heat energy to mechanical energy Light energy to chemical energy ANSWER DOWNLOAD EXAMIANS APP
Physics The angle in which a cricket ball should be hit to travel maximum horizontal distance is : 30° with horizontal 45° with horizontal 60° with horizontal 15° with horizontal 30° with horizontal 45° with horizontal 60° with horizontal 15° with horizontal ANSWER DOWNLOAD EXAMIANS APP
Physics Red light is used for signals because it has Low refraction in the medium High intensity Long wavelength High frequency Low refraction in the medium High intensity Long wavelength High frequency ANSWER DOWNLOAD EXAMIANS APP
Physics A single fixed pulley is used to draw water from a well because Velocity ratio is low Mechanical advantage is high Force is applied in a convenient direction Efficiency is 100% Velocity ratio is low Mechanical advantage is high Force is applied in a convenient direction Efficiency is 100% ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these is not a simple machine? The pulley A lever A pair of scissors A ramp The pulley A lever A pair of scissors A ramp ANSWER DOWNLOAD EXAMIANS APP
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