Kinematics — Physics STD 11 — Question

A body executes SHM with an amplitude A. Its energy is half kinetic and half potential when the displacement is ……..

Red shift is an illustration of ……….

What is the intensity of gravitational field at the center of spherical shell?

Two simple harmonic motions of angular frequencies 100 and 1000 rad/s have the same displacement amplitude. The ratio of their maximum accelerations is ……….

Which of the following cannot be a resultant of two vectors of magnitude 3 and 6?

The nature of materials in mutual contact decides –

Unit vector is –

One Astronomical unit is

Heat produced by a current is obtained a relation H = I2RT. If the errors in measuring these quantities current, resistance, time are 1%, 2%, 1% respectively then total error in calculating the energy produced is

The unit of power is