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Write the number of seconds in scientific notation. Sl. No. Unit Value in Seconds 1. 1 Minute 60 2. 1 Hour 3,600 3. 1 Day 86,400 4. 1 Month 2,600,000 5. 1 Year 32,000,000 6. 10 Years 3,20,000,000 - Mathematics

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Question

Write the number of seconds in scientific notation.

Sl. No. Unit Value in Seconds
1. 1 Minute 60
2. 1 Hour 3,600
3. 1 Day 86,400
4. 1 Month 2,600,000
5. 1 Year 32,000,000
6. 10 Years 3,20,000,000
Sum

Solution

1. 1 minute = 60 s

= 60 × 101 s

= 6 × 101 s

2. 1 hour = 3,600 s

= 36 × 102 s

= 3.6 × 10 × 102 s

= 3.6 × 103 s

3. 1 day = 86,400 s

= 8.64 × 102 s

= 8.64 × 102 × 102 s

= 8.64 × 104 s

= 8.6 × 104 s

4. 1 month = 2,600,000 s

= 26 × 105 s

= 2.6 × 10 × 105 s

= 2.6 × 106 s

5. 1 year = 32,000,000 s

= 32 × 106 s

= 32 × 106 s

= 3.2 × 10 × 106 s

= 32 × 107 s

6. 10 years = 320,000,000 s

= 32 × 107 s

= 32 × 10 × 107 s

= 3.2 × 108 s

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Chapter 11: Exponents and Powers - Exercise [Page 349]

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NCERT Exemplar Mathematics [English] Class 7
Chapter 11 Exponents and Powers
Exercise | Q 88. | Page 349

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