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13 May 2009 20:10:45 IST

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07. The number of significant digits in 0.00002 and 20,000 respectively are (a) 1 and 5 (b) 1 and

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07. The number of significant digits in 0.00002 and 20,000 respectively are(a) 1 and 5(b) 1 and 1(c) 5 and 1

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Ankit

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13 May 2009 20:14:49 IST

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b) 1 and 1

himanshu

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13 May 2009 20:24:38 IST

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1 && infinity

i am sure about that answer

Soumitra Saxena

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13 May 2009 20:27:59 IST

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ans is b)1 & 1 coz in these cases 0 will nt be counted as significant

chirag gagrani

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13 May 2009 20:41:32 IST

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according to options,its (a) i.e. 1and 5 because 0 before non-zero digit is insignificant and 0 after non-zero digit is significant

shubham sunder

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13 May 2009 23:12:43 IST

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as far as i remember...it should be c.....cause in that .00002 the 0s are telling us how precise that no is....tell me if the answer is right....hard to actually explain it....but u'll find the rules in any phy book....correct me if wrong...

NugoRama

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13 May 2009 23:16:08 IST

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i thot of c too....my explanation is same as of shubham .

negative marking

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13 May 2009 23:24:11 IST

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zeroes to d right of a decimal r counted as signi didgi.....but 0s before a no.. are not significant...so if we apply both d rules answer is c)...if it wud hav been 0000005 den it wud hav only 1 signi digi...i hope u get it!

NugoRama

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13 May 2009 23:25:20 IST

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exactly ..umm..trashed in the world :(

Akshay

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13 May 2009 23:53:07 IST

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1) the terminal or trailing zeros in a number without decimal point are not significant.

2)the no. of significant figures is counted from the first non zero digit on the left to the last digit on the right.

so no. of significant figures is 1 in each case.

shubham sunder

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14 May 2009 01:42:05 IST

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yup...tantri is right....sorry for the wrong ans....just checked it up....

Mr.Nasty ® Retired from Action.

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14 May 2009 05:46:39 IST

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Answer is 1 and 1.

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