One light year is defined as the distance travelled by light in one year. The speed of light is . Find the same in metre.
Important Questions on Measurement and Physics
Match the physical quantities with their correct units.
| List-I | List-II | ||
| (A) | Planck's constant | (I) | |
| (B) | Torque | (II) | |
| (C) | Weight | (III) | |
| (D) | Specific volume | (IV) |
The correct match is
Decide whether the below length is longer or shorter and use metre and centimetre accordingly.
The length of your shoe lace.
Decide whether the below length is longer or shorter and use metre and centimetre accordingly.
The length of a wall.
The length of a belt.
Decide whether the below length is longer or shorter and use metre and centimetre accordingly.
The length of a car.
What was the length of the smallest pencil you have used? How long is this pencil? Guess ________ cm
Measure it using a scale.
How good is your guess?
We can see that Anju used a lens to make it look bigger.
Decide whether the below length is longer or shorter and use metre and centimetre accordingly.
The length of a spoon.
Decide whether the below length is longer or shorter and use metre and centimetre accordingly.
The thickness of a book.
Decide whether the below length is longer or shorter and use metre and centimetre accordingly.
The height of a building.
Which unit will you use to measure the length of a pipe?
