The velocity of sound is more in
A). Water
B). Air
C). Steel
D). Wood
Steel
The speed of sound is faster in solid materials and slower in liquids or gases. The velocity of a sound wave is affected by two properties of matter: the elastic properties and density.
2. Two stones of different masses are dropped simultaneously from the top of a building
3. The rate of flow of electric charge is measured in
4. The characteristic invalid for heat radiation is that it travels :
5. Which is evidence that supports the dynamo theory?
6. ?Which one of the following phenomena is used in optical fibres?
7. Thermohaline circulation is mainly due to
9. What type of lens is used to correct vision of a person suffering from Myopia?