Physics The focal length of a concave mirror with a radius of curvature of 20.0 cm is : 5 cm 10 cm 15 cm 20 cm 5 cm 10 cm 15 cm 20 cm ANSWER DOWNLOAD EXAMIANS APP
Physics The period of revolution of a certain planet in an orbit of radius R is T. Its period of revolution in an orbit of radius 4R will be: 2 T 4 T 8 T 1 T 2 T 4 T 8 T 1 T ANSWER DOWNLOAD EXAMIANS APP
Physics Frictional force acts in Upward direction All the directions The same direction as the motion The opposite direction of the motion Upward direction All the directions The same direction as the motion The opposite direction of the motion ANSWER DOWNLOAD EXAMIANS APP
Physics What changes will happen to a bowl of ice and water kept at exactly zero degree Celsius ? No change will happen Only some ice will melt All ice will melt All water will become ice No change will happen Only some ice will melt All ice will melt All water will become ice ANSWER DOWNLOAD EXAMIANS APP
Physics Why is weightlessness experienced while orbiting the earth in space ships ? None of these Zero gravity Acceleration Inertia None of these Zero gravity Acceleration Inertia ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these waves can be polarized ? Light waves Transverse waves on a string Sound waves in air Longitudinal waves on a string Light waves Transverse waves on a string Sound waves in air Longitudinal waves on a string ANSWER DOWNLOAD EXAMIANS APP
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