What is upthrust?

Important Questions on Gravitation

EASY

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Very Short Answer Type Questions>Q 11

Name the principle which gives the magnitude of buoyant force acting on an object immersed in a liquid. 

EASY

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Very Short Answer Type Questions>Q 12

The relative density of mercury is $13.6$. What does this statement mean?

EASY

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Very Short Answer Type Questions>Q 13

What name is given to 'thrust per unit area'?

EASY

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Very Short Answer Type Questions>Q 14

What is the scientific name of the 'upward force' acting on an object immersed in a liquid?

EASY

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Very Short Answer Type Questions>Q 15

What is meant by the term 'buoyancy'?

EASY

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Very Short Answer Type Questions>Q 16

What causes buoyant force (or upthrust) on a boat?

EASY

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Very Short Answer Type Questions>Q 17

Why does ice float on water?

EASY

9th CBSE

IMPORTANT

Science for Ninth Class Part 1 Physics>Chapter 3 - Gravitation>Very Short Answer Type Questions>Q 18

What force acting on an area of  $0.5 {\mathrm{m}}^2$ will produce a pressure $500 \mathrm{Pa}$?