State Bernoulli's theorem.

Important Questions on Matter : Structure and Properties

MEDIUM

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 3.7.

Explain the blowing off the roofs of huts during storm.

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 3.8.

How can you define the property of elasticity of matter?

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 3.9.

State Hooke's law.

EASY

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 3.10.

What is the force constant of a spring?

MEDIUM

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 4.1.

Derive an expression for the pressure inside a liquid.

MEDIUM

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 4.2.

State Archimedes' principle. Name the factors on which the buoyant force depends on.

MEDIUM

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 4.3.

Name and explain the factors which affect the surface tension of a liquid?

MEDIUM

9th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 9>Chapter 3 - Matter : Structure and Properties>EXERCISE>Q 4.4.

What is terminal velocity? Using its idea, explain the safe jumping from an aeroplane using parachute.