Divide 12.936 by 3.2 using the correct number of significant digits.A.

1.	Divide 12.936 by 3.2 using the correct number of significant digits.A. 4.0425 B. 4.043 C. 4.0 D. 4.04
Answer» ☯ ANSWER : As, we have to find the Division of 12.936 and 3.2, USING significant digits. So, ★ Number of significant digits in 12.936 = 5 ★ Number of significant digits in 3.2 = 2 Now, we will calculate their product. → Division = 4.0425 $\Large{\implies{\boxed{\boxed{\sf{Division = 4.0425}}}}}$ So, option A is correct. $\rule{200}{2}$ ★ Additional Information : ☯ Uncertaininty in measurment When true value is not equal to experimemtal calculations then there os uncertainty in measurment. ↪ For example 2G of $\sf{H_2}$ Molecules = 602,200,000,000,000,000,000,000 But if we WRITE (602,200,000,000,000,000,000,000) as 6.022 × 10²² then our uncertainty in measurement can reduce. $\rule{100}{2}$ Now, Mass of H atom. 0.00000000000000000000000166 But if we write (0.00000000000000000000000166) as 6.61 $\times 10^{-25}$ then our uncertainty in measurement can reduce. → Meaningful to present the data, realisitiolly accurating with uncertainity. $\rule{150}{2}$ ★ There are three ways to reduce the uncertainty in measurement. (i) Scientific Notation (ii) Significant figures (iii)Dimensional analysis