Relative Density || for Class 9 in Hindi

In this Science (Physics) video in Hindi for Class 9 we explained relative density and density. This is a topic from Chapter 10 - 'Gravitation' for class 9th from NCERT.

Density of a substance is the mass per unit volume.

Relative density of a substance is the ratio of the density of that substance to the density of water.
e.g., relative density of iron is 7.8 and that of silver is 10.8

Relative density of a substance tells us how many times the substance is denser than water.

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🔴 Click here to watch the whole playlist on Chapter 10 : 'Gravitation' for Class 9 :
   • Introduction to Gravitation || in Hindi fo...  

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Previous videos :-

🔴 Introduction to Gravitation
   • Introduction to Gravitation || in Hindi fo...  

🔴 Universal Law of Gravitation
   • Universal Law of Gravitation || for Class ...  

🔴 Free Fall || Calculating 'g'
   • Free Fall || Calculate the Value of 'g' ||...  

🔴 Motion Under Gravity
   • Motion Under Gravity || for Class 9 in Hindi  

🔴 Motion Under Gravity (Part 2)
   • Motion Under Gravity (Part - 2) || Vertica...  

🔴 Mass and Weight
   • Mass and Weight || for Class 9 in Hindi  

🔴 Weight of an object on the moon
   • Weight on Moon || for Class 9 in Hindi  

🔴 Kepler's Laws of Planetary Motion
   • Kepler's Laws of Planetary Motion || for C...  

🔴 How did Newton guess the Inverse Square Rule
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🔴 Thrust and Pressure
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🔴 Pressure in Fluids
   • Pressure in Fluids || for Class 9 in Hindi  

🔴 Pressure in Fluids (Part 2) - Pascal's law, Torricelli's law
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🔴 Buoyancy
   • Buoyancy || for Class 9 in Hindi  

🔴 Archimedes' Principle
   • Archimedes' Principle || for Class 9 in Hindi  

🔴 Why objects float or sink when placed on the surface of water
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