Question

the number of significant figures in 1.50 × 10 raise to 4 g is...1)2 2) 3 3) 4) 5) ????​

Answer 1

Answer:

2) 3

Explanation:

option is 3 significant figur

in scientific notation all digits between decimal are significant

hence significant figure is 3

Answer 2

Answer: The correct answer is Option 2.

Explanation:

Significant figures are defined as the figures present in a number that expresses the magnitude of a quantity to a specific degree of accuracy.

Rules for the identification of significant figures:

• Digits from 1 to 9 are always significant and have infinite number of significant figures.
• All non-zero numbers are always significant. For example: 664, 6.64 and 66.4 all have three significant figures.
• All zeros between the integers are always significant. For example: 5018, 5.018 and 50.18 all have four significant figures.
• All zeros preceding the first integers are never significant. For example: 0.00058 has two significant figures.
• All zeros after the decimal point are always significant. For example: 2.500, 25.00 and 250.0 all have four significant figures.
• All zeroes used solely for spacing the decimal point are not significant. For example: 10000 has one significant figure.

For the given value:

$1.50\times 10^4$

The given value will have 3 significant figures. They are '1', '5' and '0'

Hence, the correct answer is Option 2.