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 (2013) 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

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Mannaj tariq
Mannaj tariq
10 years ago

please upload video lecture of 9th and metric class practicals

Robina
Robina
10 years ago

Kindly guide me about the quick quiz Q2!

Daniyal
Daniyal
10 years ago

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

burhan
burhan
10 years ago

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

burhan
burhan
10 years ago

i need a question answers physics of class 9

anas
anas
10 years ago

i need 10th class chemistry papers of 2013

hafsa shahid
hafsa shahid
10 years ago

i need a 9 class physics numerical soulation plz sir

rania
rania
10 years ago

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….

madiha
madiha
10 years ago

guide us about quick quizes/…….

madiha
madiha
10 years ago

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