EASY
11th Assam Board
IMPORTANT
Earn 100

Explain this statement clearly : “To call a dimensional quantity ‘large’ or ‘small’ is meaningless without specifying a standard for comparison”. In view of this, reframe the following statement wherever necessary :

"Atoms are very small objects".

Important Questions on Units and Measurement

EASY
11th Assam Board
IMPORTANT

“To call a dimensional quantity ‘large’ or ‘small’ is meaningless without specifying a standard for comparison”. In view of this, reframe the following statements wherever necessary : 

"A jet plane moves with great speed".

EASY
11th Assam Board
IMPORTANT

“To call a dimensional quantity ‘large’ or ‘small’ is meaningless without specifying a standard for comparison”. In view of this, reframe the following statements wherever necessary :

"The mass of Jupiter is very large".

EASY
11th Assam Board
IMPORTANT

“To call a dimensional quantity ‘large’ or ‘small’ is meaningless without specifying a standard for comparison”. In view of this, reframe the following statements wherever necessary :

"The air inside this room contains a large number of molecules".

EASY
11th Assam Board
IMPORTANT

“To call a dimensional quantity ‘large’ or ‘small’ is meaningless without specifying a standard for comparison”. In view of this, reframe the following statements wherever necessary : 

"A proton is much more massive than an electron".

EASY
11th Assam Board
IMPORTANT

“To call a dimensional quantity ‘large’ or ‘small’ is meaningless without specifying a standard for comparison”. In view of this, reframe the following statements wherever necessary :

"The speed of sound is much smaller than the speed of light".

EASY
11th Assam Board
IMPORTANT
A new unit of length is chosen such that the speed of light in vacuum is unity. What is the distance between the Sun and the Earth in terms of the new unit if light takes 8 min and 20 s to cover this distance?
EASY
11th Assam Board
IMPORTANT
Which of the following is the most precise device for measuring length:
MEDIUM
11th Assam Board
IMPORTANT
A student measures the thickness of a human hair by looking at it through a microscope of magnification 100. He makes 20 observations and finds that the average width of the hair in the field of view of the microscope is 3.5 mm. What is the estimate on the thickness of hair in mm