Two sound waves of slightly different frequencies propagating in the same direction produce beats due to

The ratio of angular speeds of the minute hand and the hour hand of a watch is

Oxidation states of $P$ in $H_4P_2O_5, H_4P_2O_6, H_4P_2O_7$ are respectively:

Which of the following statements is not correct?

If the internal energy of an ideal gas decreases by the same amount as the work done by the system,the process is

Two identical blocks $A$ and $B$,each of mass $m$,resting on a smooth floor,are connected by a light spring of natural length $L$ and spring constant $k$. $A$ third identical block $C$ (mass $m$) moving with a speed $v$ along the line joining $A$ and $B$ collides with $A$. The maximum compression in the spring is proportional to: