Force and Pressure — PHYSICS STD 8 — Question

Write the correct statement :
After getting a large amount of electrons, the potential of the earth increases enormously.

What do you mean by atmospheric pressure?

Convex mirrors are preferred over plane mirrors as rear view mirrors in cars.

An object is any where between the pole and infinity of a convex mirror.

Yashika was given an electroscope with its gold leaves diverged. What do the diverged leaves indicate? She was also given a rod which she did not know was charged or not. Yashika touched the rod to the cap of the electroscope to find that the divergence of the gold leaves decreased. What should she infer about the charge status of the rod?

What do you understand by electricity at rest?

What is the amount of work done in pushing a wall?

During dispersion of white light, which colour :-deviates most

Give three examples of inter-conversion of chemical energy into other forms of energy.

Principal axis