Question:
The number of significant figures in the numbers $4.8000 \times 10^4$ and 48000.50 are respectively
The number of significant figures in the numbers $4.8000 \times 10^4$ and 48000.50 are respectively
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Trailing zeros are significant only if there is a decimal point.
Updated On: Apr 10, 2026
- 5 and 6
- 5 and 7
- 2 and 7
- 2 and 6
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The Correct Option is B
Solution and Explanation
Step 1: Scientific Notation
In $4.8000 \times 10^4$, trailing zeros after the decimal point are significant. The power of 10 is ignored. Total: 5 figures (4, 8, 0, 0, 0).
Step 2: Decimal Numbers
In 48000.50, all digits are significant. Zeros between non-zero digits (4, 8, and 5) and trailing zeros after a decimal are significant. Total: 7 figures.
Final Answer: (b)
In $4.8000 \times 10^4$, trailing zeros after the decimal point are significant. The power of 10 is ignored. Total: 5 figures (4, 8, 0, 0, 0).
Step 2: Decimal Numbers
In 48000.50, all digits are significant. Zeros between non-zero digits (4, 8, and 5) and trailing zeros after a decimal are significant. Total: 7 figures.
Final Answer: (b)
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