What do you mean by periodic motion? Give two examples. [3 MARKS]

Humans are good conductors of electricity . Justify. Why are humans good conductors of electricity?

What is a relative error?

Which of the following is a luminous body?

If a car does not change its position with time then it is said to be __________.

When your mom holds a papad with tongs for roasting it, what kind of machine is she using?

What action does a person apply while hanging upside down from a rope?

1 mile = __ kilometer.

A vibrating body is known to generate:

10 coins are placed upon each other. If total height of the stack is 5 cm, what is the thickness of one coin?

Which of the following should be the proper position of the eye for taking the reading?

It is easy to move our finger in honey than in water because

The variation in the kinetic energy (K.E.) and the potential energy (P.E.) of a particle moving along the x-axis are shown in the graphs below. Which one of the following graphs violates the law of conservation of energy?

A compass is generally used to indicate _________.

Look at the figure given below: Without which of the following forces given below, the person would not be able to climb the wall?