Motion of System of Particles and Rigid Bodies — Physics STD 11 — Question

Two open organ pipes of lengths 50 cm and 50.5 cm produce 3 beats/s. Then the velocity of sound is …….

\text { The fractional error in the } n ^{\text {th }} \text { power of a quantity is ..... }

Two sound waves with wavelengths 5.0 cm and 5.5 cm, respectively each propagate in a gas with velocity 330 m/s. The number of beats per second will be ……..

If V-velocity, K – kinetic energy and T – time are chosen as the fundamental units, then what is the dimensional formula for surface tension?

If two vectors are having equal magnitude and same direction is known as –

A wave of frequency 100 Hz is sent along a string towards a fixed end when this wave travels back after reflection, a node is formed at a distance of 10 cm from the fixed end of the string. The speed of the incident wave is ……

We consider a thermodynamic system. If ∆U represent the increase in its energy and W the work done by the system, which of the following statements is true?

Number of significant digit in 20.00 …..

Two balloons are filled, one with pure He gas and the other with air. If the pressure and temperature in both the balloons are same the number of molecules per unit volume is

The weight of an astronaut, in an artificial satellite revolving around the Earth is: