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प्रश्न
What is a lunar month?
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उत्तर
One lunar month is the time in which the moon completes one revolution around the earth. A lunar month is made of nearly 4 weeks.
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संबंधित प्रश्न
Complete the following: 1 light year =……….m
Complete the following : 1 a.m.u (or u) =……..kg
‘The distance of a star from the earth is 8.33 light minutes.’ What do you mean by this statement? Express the distance in metre.
Define a fundamental quantity.
Complete the rollowing:
1 m = ____ Å
Complete the rollowing:
1 u = ____ kg
5 km = ______ m.
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.
