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Physics · UNITS AND MEASUREMENT

हिन्दी

In scientific notation, a number is expressed as \( a \times 10^b \). What is the range of values for \( a \)?

  1. \( 0 \le a < 10 \)
  2. \( 1 \le a \le 10 \)
  3. \( 1 \le a < 10 \)
  4. \( 0 < a \le 1 \)

Correct answer · Option 3

\( 1 \le a < 10 \)

Explanation

By definition of standard scientific notation, every number is expressed as \( a \times 10^b \), where \( a \) is a number between 1 and 10 (\( 1 \le a < 10 \)).
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