Advertisements
Advertisements
प्रश्न
Exercise
Advertisements
उत्तर
Two units of length smaller than a metre are
(a). Decimeter = 0.1 metre
(b). Centimeter = 0.01 metre
APPEARS IN
संबंधित प्रश्न
Answer the following question.
Star A is farther than star B. Which star will have a large parallax angle?
While measuring the length of an object using a ruler, the position of your eye should be
Guess whose tail is the longest. Now measure the tails. How good is your guess?
What is the length of a 100 rupee note? Guess. Now measure it using a scale.
How many stamps are needed to cover the rectangle?
How close was your earlier guess? Discuss.
You can play this game on the ground. Make two squares of one square meter each. Divide your class into two teams. Ready to play!
- How many of you can sit in one square meter?
There are two beautiful lakes near a village. People come for boating and picnics in both the lakes. The village Panchayat is worried that with the noise of the boats the birds will stop coming. The Panchayat wants motorboats in only one lake. The other lake will be saved for the birds to make their nests.
- A longer boundary around the lake will help more birds to lay their eggs. So which lake should be kept for birds? Which lake should be used for boats?
Consider a sunlike star at a distance of 2 parsecs. When it is seen through a telescope with 100 magnification, what should be the angular size of the star? Sun appears to be (1/2)° from the earth. Due to atmospheric fluctuations, eye can’t resolve objects smaller than 1 arc minute.
Which instruments are used to measure very small distances at the atomic scale?
