# PTB 9th Class Physics Chapter 1 Solved Questions and Numericals Problems

View and Download the solved questions, solved numerical problems or 9th Class Physics notes of Chapter 1 “Physical Quantities and Measurement” of Punjab Textbook Board. These 9th class physics notes of 1st Chapter are according to the new syllabus of Punjab Boards including Lahore Board, Gujranwala Board, Sahiwal Board, Rawalpindi Board, Faisalabad Board, Multan Board, Bahawalpur Board, Federal Board, DG Khan Board and Sargodha Board. Students of 9th Class of all these board can facilitate from the physics notes given below. You can also download  9th Class Physics Chapter 1 Solved Questions and Numericals Problems.

### Unit 1: Physical Quantities and Measurements

By studying this chapter students will be able to: Describe the crucial role of Physics in Science, Technology and Society. Explain with examples that Science is based on physical quantities which consist of numerical magnitude and a unit. Differentiate between base and derived physical quantities. list the seven units of System International (SI) alongwith their symbols and physical quantities (standard definitions of SI units are not required). Interconvert the prefixes and their symbols to indicate multiples and sub-multiples for both base and derived units. Write the answer in scientific notation in measurements and calculations. Describe the working of Vernier Callipers and screw gauge for measuring length. Identify and explain the limitations of measuring instruments such as metre rule, Vernier Callipers and screw gauge. Describe the need using significant figures for recording and stating results in the laboratory.

#### 9th Class Physics Chapter 1 Short Question Answers

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#### 9th Class Physics Chapter 1 Solved Numericals

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#### Correction and Comments about Numericals and Short Question Answers

• Short Question 1.8
Problem: Wrong answer given in notes.
Correct Answer:  It is the measurement or value that an instrument shows when it should be showing zero.
• Short Question 1.9
Problem: Wrong answer given in notes.
Correct Answer: By knowing the zero error, necessary correction can be made to find correct measurement. Otherwise our reading will be incorrect.
• Numerical 1.7
Problem : Wrong values of pitch of the screw guage(0.1mm) and number of division(100).
Correction:  The vale of pitch of the screw should be 0.5mm and number of divisions should be 50 according to the question. There is no change in answer, it remains the same.

Click 9th Class Physics Notes for other chapter’s notes

These solved numerical problems and question answer are explain properly and we hope that students will not find any difficult or confusion in these notes. But if students have any type of question or query regarding 9th Class Physics Notes, Solved Question Answers and Solved Numerical problems, then they can ask us by commenting below in the comment section.

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1. Areeba said:

I need 9class physics numerical….. Plz sir upload kar dy…plzzzzz sir it’s my humbly request… Plz sir

January 20, 2019

February 7, 2019
2. Abubakr said:

This is very usefull espacially for students and i am a student and tomorrow is my paper of physics in school and i got help by these

October 31, 2018
3. irtaza kazmi said:

it is a very helpfull notes…
Thsnkyou..

September 30, 2018
4. Junaid javed said:

Thanks for such a nice notes…..

July 31, 2018
5. maqsood janjua said:

AOA ………
its realy fantastic

April 18, 2018
6. Maida said:

Sir u r really doing an awesome job. These notes r really so much helpful for us
Keep doing that great job!!!

August 16, 2017
7. Saima said:

Sir plz ajk text book baord muzafarabad, class 9th k physics k chapter k last, mean exrcise k solved notes mil sakty? And author dr.naeem khalid hai, aur dr. Shazia naeem

August 7, 2017
8. Ali boota said:

In chapter1 question 1.1 (iv)ka answer wrong hai or wrong nahi ha to play mujhe explain karo

July 30, 2017
9. Muhammad Ishaq said:

It is very helpful notes for us.

July 20, 2017
10. Dua khan said:

Can i get these notes in urdu …

July 8, 2017
11. gulmakai said:

hello sir mujhay wo numerical chahye jo chap k end may ho

January 25, 2016
12. zeeshan malik said:

hand writing notes

November 4, 2015
13. asheq ali said:

these are very good notes. thank youuuuuuuuuuuu

July 18, 2014
14. Umer sultan said:

Its owesome you are doing a good job sir

June 30, 2014
15. waqar said:

Sir plz is question ka answer day dein find the base quntities involved in each of the following derived quntities a)speed b)volume c)force d)work give answer

June 14, 2014

a) Speed
Formula: distance/time
so in speed length and time are the base quantities.

b) Volume
volume is actually cube of length so length is the base quantity in volume.

c) Force
Formula: mass*acceleration = mass * (velocity/time) = mass*(displacement/time)(1/time)
So mass, length and time are the base quantities in Force.

d) Work
Formula: Force*displacement
so mass, length and time are the base quantities in Work.

June 22, 2014

answer nichy ha us swal k

February 8, 2015
16. danish said:

sir plz,physic ka improtant chapter pta da plz

April 6, 2014
17. styloofari said:

January 18, 2014
18. Amir said:

Dear Sir! you doing a wonderful task i love it
thanks for provide this

November 13, 2013
19. Mannaj tariq said:

please upload video lecture of 9th and metric class practicals

October 27, 2013
20. Robina said:

Kindly guide me about the quick quiz Q2!

October 26, 2013
21. Daniyal said:

sir ye ab new tab mein open he nahi hota or nahi full screen mein plz repair

August 18, 2013

Download the pdf files and view in Adobe reader or click the arrow on top right corner of the document.

August 18, 2013
22. burhan said:

sir plz ap mujy 9 class ki physics k chapter 1 ki mini exercises aur quik quize b send kr den?

August 2, 2013
23. burhan said:

i need a question answers physics of class 9

August 2, 2013
24. anas said:

i need 10th class chemistry papers of 2013

July 7, 2013
25. hafsa shahid said:

i need a 9 class physics numerical soulation plz sir

July 3, 2013
• shahrukh said:

yr muje 4th bi monthly ka important bata do plzzzzzzzzz

February 10, 2015
26. rania said:

tell me about chapter 1 problm 1.7 …… too much confusing…… pitch of scre is .5mm .no ov divisns is 50….. simply divide pich by no ov divisn…. 4m ur notes i cant understnd it….

June 23, 2013

Yes you are right, there is little mistake in our notes.

June 24, 2013

guide us about quick quizes/…….

June 22, 2013

What do u want to know?

June 22, 2013

i want to know the nam ov authr of ths notes

June 22, 2013

Why do you want to know?

June 23, 2013

plzzzzzzzzzz tell me …..

June 23, 2013

plzzzzzz guide us about quick quizes of 9th class……… and i found mistakes in chapter 3 mcq and 1 short qustn……. correct it…… nd thnxxxxxxx 4 great notes…… Allah bless u

June 22, 2013

Kindly tell the question numbers of the incorrect answers.

June 22, 2013

chapter 3 qustn 3.8 tentn in roop………. its anz iz nt 100….

June 22, 2013

if it iz 100 then plzzzzzzzzzz tell how…… i discuss this qustn 2 my teachrz….. nd finally i found correct ans that iz 200

June 22, 2013

It is 100N, let me explain it by an example. Consider a block weighing 100N attached to a string, the other end of the string is attached to a roof, now the block is stationery it means that there is force equal and opposite to the weight of the box (according to Newton’s third law of motion). So the tension in the string is 100N equal to the weight of the box.

June 23, 2013

no its iz 200 newtn…….. tentin is due to both of forces that iz 200n……. 3 phd doctrs reply me 200 netn/……..

June 23, 2013

Don’t just give answers, give explanation. Tell your doctors the explanation I have given you.

June 23, 2013

tentn is stess which is due to both of forces either they are oposite sides……. that is 200 netn

June 23, 2013

plzzzzzzzzzzzzzz ap is ko again search kry or discuss kry apny teachrz sy……

June 23, 2013

2 forces lag rhi 100 newtn ki ……… mjy ap k anz ki samaj nai i

June 23, 2013

forces 100 100 ki dono sides py to????????????????????? m toooooooooo much confusedddddd……. plzzzzzzzzzzzzzzzzzz guide me…………..

June 23, 2013
• hania said:

oky

June 23, 2013
• Javeria Haroon said:

Madiha admin sahi keh rahay hain. Jab koi box kisi support se hang hota hai tab bhi us ki string pe dono taraf se 100N ki opposite force lag rahi hoti hai lekin ham tension box k weight k equal letay hain. Haan agar dono forces same direction mai hoti tu tab 200N tension hoti.

June 24, 2013
29. Aleezey said:

sir plz kya mjhy physics ki 10th ki PTB,lahore k notes mil skty hain new edition hai,
n 9th k baqi chaps kb uplaod hngy ???

June 13, 2013

Will be uploaded soon.

June 14, 2013
30. barbe doll said:

sir plz ap mujy 9 class ki physics k chapter 1 ki mini exercises aur quik quize b send kr den?

June 10, 2013
31. barbe doll said:

sir please mujy unit”physical quntities and mesurement”k n0tes email k thr0ugh send kr den

June 10, 2013

June 10, 2013
• burhan said:

yes

August 2, 2013
32. ayesha said:

May 20, 2013
33. ayesha said:

i cant get the notes ooooooo

May 20, 2013
34. iqra naz said:

sir please give me chap:2 (kinematics) notes

May 11, 2013
35. asdf said:

Thanks for such nice notes. weldone

May 10, 2013
36. mary said:

yup.this is quite useful but plz try it 2 make a little more clear

April 25, 2013