Waves — Physics STD 11 Science — Question

Assume that the law of gravitation changes from inverse square to inverse cube. Does the angular momentum of a planet about the sun will remain constant?

Determine the maximum acceleration of the train in which a box lying on its floor will remain stationary, given that the co-efficient of static friction between the box and the train’s floor is 0.15.

The density of a rod AB continuously increases from A to B. Is it easier to set it in rotation by clamping it at A and applying a perpendicular force at B or by clamping it at B and applying the force at A?

Why does a piece of red glass when heated and taken out glow with green light?

Two astronauts on the surface of moon cannot talk to each other. Why?

Commercial unit of power kWh is equal to ­________.

Can the temperature of a system be increased without heating it?

What is the law of equi-partition of energy?

Can there be two-dimensional motion despite one-dimensional acceleration?

Water in a capillary tube is 6 cm rise to a height. To what height will water rise in a second capillary tube whose diameter is 2/3 of the first?