Assertion: 1.34 × 10-3 and 1.23 both have three significant figures. Reason: Number other than zero are all significant.

Question

Assertion: 1.34 × 10-3 and 1.23 both have three significant figures. Reason: Number other than zero are all significant. (A) If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion. (B) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion. (C) If the Assertion is correct but Reason is incorrect. (D) If the Assertion is incorrect and Reason is correct.

Tardigrade Admin · Accepted Answer

For a number written in scientific notation all digits are significant. All the zeros to the right of the decimal point are significant.

Q. Assertion : 1.34×10−3 and 1.23 both have three significant figures. Reason : Number other than zero are all significant.

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

If the Assertion is correct but Reason is incorrect.

If the Assertion is incorrect and Reason is correct.

For a number written in scientific notation all digits are significant. All the zeros to the right of the decimal point are significant.

Q. Assertion : $1.34 \times 1 0^{- 3}$ and $1.23$ both have three significant figures.
Reason : Number other than zero are all significant.