Question 1

Which one among the following statements is correct?

Pressure has magnitude as well as directionAs we go deeper in a liquid, the pressure decreasesAction and reaction forces act on the same objectPascal and N/m² represent the same unit

Question 2

Why a fielder in the ground gradually pulls his hands backward while catching a fast moving cricket ball?

To reduce the acceleration of the ballTo increase the acceleration of the ballTo increase the velocity of the ballNone of above

Question 3

Which one of the following statements about surface tension is correct?

It increases when temperature increasesIt decreases when temperature increasesIt will remain same with increase or decrease of temperatureIt will always decrease with increase or decrease of temperature

Question 4

The volume of a sealed packet is 1 litre and its mass is 800 g. The packet is first put inside water with density 1 g cm$^{-3}$ and then in another liquid B with density 1.5 g cm$^{-3}$. Then which one of the following statements holds true?

The packet will float in both water and liquid B.The packet will sink in both water and liquid B.The packet will sink in water but will float in liquid B.The packet will float in water and sink in liquid B.

Question 5

The instrument used to measure atmospheric pressure is the

ThermometerBarometerAmmeterHydrometer

Mechanics and Properties of Matter

Core concepts

Quick strategy

Common mistakes

Chapter-end mini quiz