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

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

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What is a relative error?

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Which of the following is a luminous body?

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

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

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

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1 mile = __ kilometer.

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A vibrating body is known to generate:

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

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

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

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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?

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A compass is generally used to indicate _________.

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

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