We could see clouds almost every day.Why doesn't it rain daily?

A single pole doesn't exist . Why ?

i. Will the velocity of a stone thrown vertically upwards remian constant or will it change with time? How will it change? ii. Why doesn't the stone move up all the time? Why does it fall down after reaching a certain height? iii. What does its maximum height depend on?

A person goes to bed at shasrp 10.00 pm every day. Is it an example of periodic motion? If yes, what is the time period? If no why?

What do you know about the following important terms, which we come across every day. (a) Heart attack (b) Cardiac arrest (c) Heart Failure

Sha went to a doctor and said that he could not see distant objects clearly. Doctor tested and prescribed a lens of power - 0.75 D. a. what is the eye defect of sha ? b. Why did the doctor prescribe a lens - 0.75 D ? c. What type of lens is this ?

Why don't we have interference when two candles are placed close to each other and the intensity is seen at a distant screen? What happens if the candles are replaced by laser sources?