Warning: foreach() argument must be of type array|object, bool given in /var/www/html/web/app/themes/studypress-core-theme/template-parts/header/mobile-offcanvas.php on line 20

Read the following question and choose correct Answer form given below. (A) Both assertion and reason are true. Reason is the correct explanation of the Assertion. (B) Both assertion and reason are true. Reason is not correct explanation of the assertion. (C) Assertion is true but reason is false. (D) Assertion is false and Reason are true. (i) Assertion :- In a radio-active disintegration, an electron is emitted by nucleus. Reason :- electron are always Present in-side the nucleus. (ii) Assertion :- An electron and Positron can annihilate each other creating Photon Reason:- Electron and Positron form a Particle and anti Particle pair. (iii) Assertion:- An isolated radioactive atom may not decay at all what ever be its half time Reason:- Radioactive decay is a statistical Phenomena. (iv) Assertion:- Fragment Produced in the fission of \(\mathrm{u}^{235}\) are active Reason:- The fragments have abnormally high Proton to neutron ratio

Short Answer

Expert verified
(i) (C) Assertion is true but reason is false. (ii) (A) Both assertion and reason are true. Reason is the correct explanation of the Assertion. (iii) (A) Both assertion and reason are true. Reason is the correct explanation of the Assertion. (iv) (A) Both assertion and reason are true. Reason is the correct explanation of the Assertion.

Step by step solution

01

Assertion 1 and Reason 1

The assertion mentions that in a radioactive disintegration, an electron is emitted by the nucleus. This is correct. The given reason for this is that electrons are always present inside the nucleus. This reason is incorrect, as electrons are not usually found inside the nucleus. So the correct answer for this pair is: (C) Assertion is true but reason is false.
02

Assertion 2 and Reason 2

The assertion states that an electron and positron can annihilate each other, creating a photon. This is a correct statement. The reason given is that an electron and positron form a particle and antiparticle pair. This reason is also true and it correctly explains the phenomenon of annihilation between electron and positron. So the correct answer for this pair is: (A) Both assertion and reason are true. Reason is the correct explanation of the Assertion.
03

Assertion 3 and Reason 3

The assertion states that an isolated radioactive atom may not decay at all, regardless of its half-life. This statement is true because radioactive decay is a probabilistic event, and it's possible that an individual atom might never decay. The given reason for this is that radioactive decay is a statistical phenomenon. This reason is also true, and it provides the correct explanation for the assertion. So the correct answer for this pair is: (A) Both assertion and reason are true. Reason is the correct explanation of the Assertion.
04

Assertion 4 and Reason 4

The assertion states that fragments produced in the fission of \(\mathrm{U}^{235}\) are active. This is true because the fission fragments resulting from the splitting of the uranium nucleus are radioactive isotopes. The given reason for this is that the fragments have an abnormally high proton-to-neutron ratio. This is also true, as the high proton-to-neutron ratio leads to an unstable nucleus, making the fragments radioactive. So the correct answer for this pair is: (A) Both assertion and reason are true. Reason is the correct explanation of the Assertion.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

See all solutions

Recommended explanations on English Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free