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प्रश्न
Define a fundamental quantity.
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उत्तर
The physical quantities like mass, length and time which do not depend on each other are known as fundamental quantities.
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संबंधित प्रश्न
Complete the following: 1 quintal =………kg
Define standard meter.
Express light year in terms of meter.
State two conditions for a beam balance to be true.
Define measurement.
Which of the following is correct?
Match the events related to motion in Column I with the types of motions given in Column II.
| Column I | Column II | ||
| (a) | A moving wheel of a sewing machine |
(i) | Circular motion |
| (b) | Movement of tip of the minute hand of a clock in one hour |
(ii) | Rotational motion |
| (c) | A moving swing | (iii) | Periodic motion |
Questions based on Higher Order Thinking Skills:
|
There are three spheres A, B, C as shown below. Sphere A and B are made of same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. Density of A is double that of C. |
Now answer the following questions.
- Find the ratio of masses of spheres A and B.
- Find the ratio of volumes of spheres A and B.
- Find the ratio of masses of spheres A and C.
Define measurement.
