Basics of Light, Sound and Gravity – Free General Science EBook

General Science section is one of the most important sections of SSC and Railway Exams.
Therefore, we regularly provide you with Free Science Study notes through Blogs and E-books for your preparation. In this section, questions related to Basics of Light, Sound and Gravity have been asked. Hence it becomes very important for all the candidates to be aware about Light, Sound and Gravity and their basic properties.

In all the Government exams like SSC and Railway Exams, Every mark counts and even 1 mark can be the difference between success and failure.

Therefore, to help you get these important marks we have created a Free General Science Study Notes Study
notes E-book on Basics of Light, Sound and Gravity.

Know all about the Basic properties of Light, Sound and Gravity by downloading the Free E-book through the following link –

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 Basics of Light, Sound and Gravity – Sneek Peek

Light and its Optical properties

Light is a form of energy which is in the form of an electromagnetic wave and is almost everywhere around us.

The visible light has wavelengths measuring between 400–700 nanometres. Sun is the primary source of light by which plants utilize this to produce their energy.

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What Is Sound?

A sound is a vibration that propagates through a medium in the form of a mechanical wave.

The medium in which it propagates can either be a solid, a liquid or a gas. Sound travels fastest in solids, relatively slower in liquids and slowest in gases.

A sound wave is the pattern of disturbance caused by the energy traveling away from the source of the sound.

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What is Gravity?

We barely think about gravity in our daily lives, but we must realise that it defines the way we interact with the world. We grow within its constraints, and our heart, muscles, balance system all depend on it.

Gravity, also known as Gravitation, is the universal force of attraction acting between all matter.
Gravity is the mysterious force that makes everything fall down towards the Earth.

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