Nature of Physical World and Measurement — Physics STD 11 — Question

Mass of an electron …….

Center of mass may lie –

A metal bob is suspended from a coiled spring. When set into vertical vibrations on the earth. It oscillates up and down with frequency f If the same experiment is carried out in a satellite circling the Earth the frequency of vibration will be …….

The velocity of sound in air at NTP is 330m/s. What will be its value when temperature is doubled and pressure is halved?

If the net torque acting on the body is zero, then the body is in –

A compartment of an uniformly moving train is suddenly detached from the train and stops after covering some distance. The distance covered by the compartment and distance covered by the train in the given time –

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