If 20% of a radiactive element decays in 10 days, then amount of original material left

If 20 Of A Radiactive Element Decays In 10 Days Physics Question

If 20% of a radiactive element decays in 10 days, then amount of original material left after 30 days is (approx)

Options

(a) 78%
(b) 62%
(c) 51%
(d) 48%

Correct Answer:

51%

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

Related Questions:

  1. In a vessel, the gas is at a pressure P. If the mass of all the molecules
  2. The maximum number of possible interference maxima for slit-seperation equal to
  3. Pure Si at 500 K has equal number of electron (nₑ) and hole (nₕ) concentrations
  4. A thermocouple is made from two metals, antimony and bismuth. If one junction
  5. A concave mirror ia placed over a beaker containing water of

Topics: Radioactivity (83)
Subject: Physics (2479)

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*