Question

Find the number of significant figures in the following quantity, quoting the relevant laws: (i) 426.69 (ii) 4200304.002 (iii) 0.3040 (iv) 4050 m (v) 5000

Answer 1

Answer:

i) 5 ii) 10 iii) 4 iv) 4 v) 1

Explanation:

in (i) there are 5 significant digits....

in (ii) there are 10 significant digits because the zero in bettween the non zero are significant

Answer 2

Answer:

given below.

Explanation:

1. ....5.... => non zero numbers are significant.

2. ....10.... => zero between non zero numbers are significant.

3. ....4.... => zero on the left of the non zero number is insignificant and on the right of the same is significant if there is a decimal point.

4. ....3.... => there is no decimal point on the right of the significant figure , hence the zero on the right is ignored.

5. ....1.... => ||| to 4.

note : in case of questions like, 10 flowers or 100 canels, the number of significant figure is infinite.