Physics When a ring of metal is heated what happens to its hole ? Contracts It expands or contracts according to its coefficient of expansion It expands or contracts according to its diameter Expands Contracts It expands or contracts according to its coefficient of expansion It expands or contracts according to its diameter Expands ANSWER DOWNLOAD EXAMIANS APP
Physics The work done by the string of a simple pendulum during one complete oscillation is equal to Zero Kinetic energy of the pendulum Potential energy of the pendulum Total energy of the pendulum Zero Kinetic energy of the pendulum Potential energy of the pendulum Total energy of the pendulum ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following occurred first ? Wright Brothers successfully flew an aircraft Max Planck unveiled the Quantum Theory Guglielmo Marconi sent out the first wireless signals Albert Einstein propounded the General Theory of Relativity Wright Brothers successfully flew an aircraft Max Planck unveiled the Quantum Theory Guglielmo Marconi sent out the first wireless signals Albert Einstein propounded the General Theory of Relativity ANSWER DOWNLOAD EXAMIANS APP
Physics Two metallic wires made from copper have same length but the radius of wire 1 is half of that of wire 2. The resistance of wire 1 is R. If both the wires are joined together in series, the total resistance becomes 5R/4 3R/4 2R R/2 5R/4 3R/4 2R R/2 ANSWER DOWNLOAD EXAMIANS APP
Physics Which law relates to the ideal gas law? P1V1 = P2V2 P1/V1 = P2/V2 P1T1 = P2T2 T1/V1 = T2/V2 P1V1 = P2V2 P1/V1 = P2/V2 P1T1 = P2T2 T1/V1 = T2/V2 ANSWER DOWNLOAD EXAMIANS APP
Physics A 4 kg object is moving horizontally with a speed of 5 m/s. To increase its speed to 10 m/s, the amount of net work required to be done on this object is: 100 J 50 J 150 J 75 J 100 J 50 J 150 J 75 J ANSWER DOWNLOAD EXAMIANS APP
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