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18th Chapter

10th class Physics Ch 18 (English Medium)

Here you can prepare 10th Physics English Medium Chapter 18 (Radioactivity) Test. Click the button for 100% free full practice test.

Matric Part 2/10th Class Physics Chapter 18 MCQ Test With Answer for Chapter 18 (Radioactivity)

Matric Part 2/10th Class Physics Chapter 18 MCQ Test With Answer for Chapter 18 (Radioactivity)

Sr. # Questions Answers Choice
1 The half life of radium - 226 is 1620 years. If N is its total amount then after the four half lives, its left amount will be:
  • A. 1/2 N
  • B. 1/4 N
  • C. 1/8 N
  • D. 1/16 N
2 The Half life of a certain isotopes is 1 day. What is the quantity of isotopes after 2 days?
  • A. One half
  • B. One quarter
  • C. One eight
  • D. None of these
3 <p class="MsoNormal">the resistance of an ammeter should be:<o:p></o:p></p>
  • A. <p class="MsoNormal">high<o:p></o:p></p>
  • B. <p class="MsoNormal">very high<o:p></o:p></p>
  • C. <p class="MsoNormal">low<o:p></o:p></p>
  • D. <p class="MsoNormal">constant<o:p></o:p></p>
4 <p class="MsoNormal">The current which does not change its direction is called:<o:p></o:p></p>
  • A. <p class="MsoNormal">A.C<o:p></o:p></p>
  • B. <p class="MsoNormal">D.C<o:p></o:p></p>
  • C. <p class="MsoNormal">Conventional<o:p></o:p></p>
  • D. <p class="MsoNormal">Transient current<o:p></o:p></p>
5 <p class="MsoNormal">in a dry cell, chemical energy changes into:<o:p></o:p></p>
  • A. <p class="MsoNormal">mechanical energy<o:p></o:p></p>
  • B. <p class="MsoNormal">electrical energy<o:p></o:p></p>
  • C. <p class="MsoNormal">potential energy<o:p></o:p></p>
  • D. <p class="MsoNormal">kinetic energy<o:p></o:p></p>
6 <p class="MsoNormal">Circuit breaker works on the principle of:<o:p></o:p></p>
  • A. <p class="MsoNormal">Electric current<o:p></o:p></p>
  • B. <p class="MsoNormal">Magnetism<o:p></o:p></p>
  • C. <p class="MsoNormal">Electromagnetism<o:p></o:p></p>
  • D. <p class="MsoNormal">Electrostatics<o:p></o:p></p>
7 <p class="MsoNormal">The galvanometer has been named after the scientist:<o:p></o:p></p>
  • A. <p class="MsoNormal">Lewis<o:p></o:p></p>
  • B. <p class="MsoNormal">Lowry bronsted<o:p></o:p></p>
  • C. <p class="MsoNormal">Luigi Galvano<o:p></o:p></p>
  • D. <p class="MsoNormal">Galvano Einstein<o:p></o:p></p>
8 <p class="MsoNormal">diamond des not conduct electricity, because it has no:<o:p></o:p></p>
  • A. <p class="MsoNormal">free electrons<o:p></o:p></p>
  • B. <p class="MsoNormal">free protons<o:p></o:p></p>
  • C. <p class="MsoNormal">free neutrons<o:p></o:p></p>
  • D. <p class="MsoNormal">free positive charge<o:p></o:p></p>
9 <p class="MsoNormal">The equivalent resistance of a parallel combination is:<o:p></o:p></p>
  • A. <p class="MsoNormal">Equal to sum of all resistance<o:p></o:p></p>
  • B. <p class="MsoNormal">Is greater than the largest resistance of combination<o:p></o:p></p>
  • C. <p class="MsoNormal">Is smaller than the smallest resistance of combination<o:p></o:p></p>
  • D. <p class="MsoNormal">All of these<o:p></o:p></p>
10 <p class="MsoNormal">What type of graph is in between V and I, if metal obeys ohm’s law:<o:p></o:p></p>
  • A. <p class="MsoNormal">Curved<o:p></o:p></p>
  • B. <p class="MsoNormal">Parabola<o:p></o:p></p>
  • C. <p class="MsoNormal">Straight line<o:p></o:p></p>
  • D. <p class="MsoNormal">None of these<o:p></o:p></p>

Top Scorers of 10th Class Physics Chapter 18 Radioactivity English Medium KPK Boards Online Mcqs

I

Inshra

Lahore13 - Nov - 2023

7/12
05 Mins 21 Sec
A

Areeba Shamshad

Lahore14 - Oct - 2023

6/12
02 Mins 42 Sec

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