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Short Tricks for Revision: Units & Dimensions Video Lecture | Physics for JEE Main & Advanced
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FAQs on Short Tricks for Revision: Units & Dimensions Video Lecture - Physics for JEE Main & Advanced
| 1. How can you determine the dimension of any physical quantity? |  |
Ans. To find the dimension of any physical quantity, you can analyze the fundamental dimensions such as length, mass, and time present in the given quantity and express it in terms of these fundamental dimensions using the principle of homogeneity.
| 2. Can the dimension of a physical quantity change in different systems of units? | |
Ans. No, the dimension of a physical quantity remains constant regardless of the system of units used. The value of the quantity may change based on the units, but its dimension will always be the same.
| 3. Why is it important to determine the dimension of a physical quantity? | |
Ans. Determining the dimension of a physical quantity helps in understanding the relationships between different quantities and in deriving equations that govern physical phenomena. It also aids in performing dimensional analysis and checking the correctness of equations.
| 4. What are the fundamental dimensions used to express physical quantities? | |
Ans. The fundamental dimensions commonly used are length (L), mass (M), and time (T). These dimensions serve as the building blocks for expressing the dimensions of all other physical quantities.
| 5. How can dimensional analysis be applied to solve problems in physics? | |
Ans. Dimensional analysis can be used to derive relationships between physical quantities, check the consistency of equations, and simplify complex problems by reducing the number of variables involved. It is a powerful tool in solving problems in physics.
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Nov 22, 2024 Last updated |
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