Physics

# Which of the following is used as SI prefix:

Mega

Hecto

Tera

##### SOLUTION
Mega, Hecto and Tera are used as SI prefix. Mega is used for $10^{6}$, Hecto for $10^2$ and Tera for $10^{12}$.

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Multiple Correct Medium Published on 18th 08, 2020
Questions 244531
Subjects 8
Chapters 125
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##### ASSERTION

A number 2.746 rounded off to three significant figures is 2.75, while the number 2.743 would be 2.74.

##### REASON

In rounding off the uncertain digits, the preceding digit is raised by 1 if the insignificant digit to be dropped is more than 5 and is left unchanged if ; the latter is less than 5.

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