हिंदी

What percentage of radioactive substance is left after five half - lives? -

Advertisements
Advertisements

प्रश्न

What percentage of radioactive substance is left after five half-lives?

विकल्प

  • 20 %

  • About 97 %

  • About 3 %

  • 5 %

MCQ
रिक्त स्थान भरें

उत्तर

About 3 %

Explanation:

`"N"_0/"N" = 2^5`

`therefore "N"/"N"_0 = 1/2^5`

`therefore "N"/"N"_0 xx 100 = 100/32 =  3.125`%

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×