Question

What is Scientific Notation and significant figures.

Class 11.​

Answer 1

Hey mate

Scientific notation is method to express these numbers in a manageable fashion.

Thus 0.000 000 1 cm can be written in 1 × 10 minus 7 square

Significant figures apply to measured values. they are significant to the measurement Not to the number.

hope it's helpful for you ✌️✌️

Answer 2

$\huge \boxed{ \underline{ \underline{ \bf{Answer}}}}$


$\underline{ \bf{Scientific \: \: Notation :}}$

In Scientific Notation a no. is written in the standard form of exponential.
$\boxed{ \bf{N \: \times \: {10}^{n} }}$
where, N = a no. with a single non- zero digit to the left of the decimal point and n = ab integer which may be positive, negative or zero.

$\bf{Example :}$

We can write any no. in Scientific Notation like

$(I) \: 62300 = 6.23 \: \times \: {10}^{4}$

$(II ) \: 0.00264 \: = \: 2.64 \: \times \: {10}^{ - 3}$


$\underline{ \bf{Significant \: \: Figures :}}$

Significant Figures are total no. of digits in any no. including the last digit whose value is uncertain.

$\bf{Example :}$

(i) 0. 0025

―> Here, there are 2 significant figures.

(ii) 208

―> Here, there are 3 significant figures.

There are certain rules for determining significant figures