Question

State the number of significant figures in cach of the following:
(i) 307.45
(1) 0,00683

$7.375 \times {10}^{5}$
(iv) 0.487
(v) 5.007​

Answer 1

Answer:

1) 5  ,  2) 3   , 3) 4   ,  4) 3   , 5) 4

Step-by-step explanation:

Significant digit

All well know and first doubt full digit are called Significant digits.

1)

307.45

In 307.45 all digit are Significant digits

SO in 307.45

Significant digits are 5

2)

0,00683

In 0,00683 all zero are not Significant digits

SO in 0,00683

Significant digits are 3

3)

7.375 × 10^5

In 7.375 × 10^5 all zeros to right side are not Significant digits

SO in 7.375 × 10^5

Significant digits are 4

4)

0.487

In 0.487  zeros on left side of point is not Significant digit

SO in 0.487

Significant digits are 3

5)

5.007

In 5.007 zero present in digits 5 and 7 are also Significant digits

So in 5.007

Significant digits are 4