Can there be a situation in which E-u < 0?

Can you ever have a situation in which a light ray goes undeviated through a prism ?

Scarcity is a situation in which ……….. .

Given a cylindrical tank, in which situation will you find surface area and in which situation volume. To find how much it can hold.

Column-1 shows certain situations with certain conditions and column-2 shows the parameters in which situations of column-1 match. Which can be possible combination.

Is it possible to have a situation where mechnial energy (E ) - potential energy (E_p) is negative, i.e., (E - E_p) lt 0 ?

A figure below shows the forces that three charged particles exert on each other. Which of the four situations shown can be correct .

Given a cylindrical tank,in which situation will you find surface area and in which situation volume.(a) To find how much it can hold.(b) Number of cement bags required to plaster it. (c) To find the number of smaller tanks that can be filled with water from it.