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- Confused! kindly explain, The respective number of significant figures for the numbers 23.023, 0.0003 and 2.1 x 10-3 are
The respective number of significant figures for the numbers 23.023, 0.0003 and 2.1 x 10-3 are
| Option 1)
4, 4, 2 |
Option 2)
5, 1, 2 |
| Option 3)
5, 1, 5 |
Option 4)
5, 5, 2 |
Answers (2)
1) 23.023 has 5 significant digits
2) 0.0003 has only 1 significant digits as zero to the left of first non zero digit are not significant.
3) 2.1 x 10-3 It has two significant digits
As we learnt earlier in Based on Tip: Leading Zeros
0.543 - three significant figures
0.069 - two significant figures
and Based on Tip: Exponential rotation
1.32 X10-2 -three significant figures
Option 1)
4, 4, 2
It is an in incorrect option
Option 2)
5, 1, 2
It is the correct option.
Option 3)
5, 1, 5
It is an incorrect option.
Option 4)
5, 5, 2
It is an incorrect option.
JEE Main high-scoring chapters and topics
Study 40% syllabus and score up to 100% marks in JEE
23.023 have 5
0.0003 have 1
2.1×10 power -3 = 0.021 have 2
5 , 1 , 2 are the significant figures
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