1. Rania is learning about the vernier caliper. She understands that the vernier caliper is used for more precise measurements. What is the least count of a typical vernier caliper?
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Ch 1
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2. Usman is studying the addition of vector quantities. He learns that vectors can be resolved into components. What is the component of a vector along the horizontal axis called?
3. George is studying prefixes. He learns that the prefix 'milli' represents 10^-3. Which of the following is an example of a milli unit?
4. Ibrahim is studying the addition of vector quantities. He learns that vectors can be added graphically. What is the method of adding vectors head-to-tail called?
5. Bongani is learning about rounding off numbers. He understands that numbers are rounded to a certain number of significant figures. What is 3.14159 rounded to 3 significant figures?
6. Measurement is comparison with:
7. Xia is learning about random errors. She understands that random errors are unpredictable and vary in magnitude. Which of the following is an example of a random error?
8. Which of the following is a physical quantity?
9. George is studying relativity. He learns that relativity deals with the relationship between space and time. Who proposed the theory of relativity?
10. Prefix milli (m) represents:
11. Qasim is learning about SI units. He understands that the SI system is used worldwide for scientific measurements. Which of the following is an SI derived unit?
12. Khalid is studying derived units. He understands that derived units are combinations of base units. Which of the following is a derived unit?
13. Nadia is learning about scalar and vector quantities. She understands that scalar quantities have only magnitude, while vector quantities have both magnitude and direction. Which of the following is a scalar quantity?
14. Mohamed is studying precision and accuracy. He learns that accuracy can be improved by using better instruments and methods. Which of the following affects the accuracy of a measurement?
15. Least count means:
16. Which of the following is a scalar quantity?
17. Force is a:
18. Paula is studying the branches of physics. She learns that thermodynamics deals with heat transfer and energy conversion. Which of the following is a thermodynamic process?
19. Yara is learning about significant figures. She understands that zeros after a decimal point but before a non-zero digit are not significant. How many significant figures are in 0.00234?
20. Random errors can be reduced by:
21. Which quantity is vector?
22. Zayn is learning about rounding off numbers. He understands that when rounding off, if the next digit is 5 or more, the digit is increased by 1. What is 6.785 rounded to two decimal places?
23. Which of the following is a base quantity?
24. Chloe is studying optics. She learns that optics deals with the behavior and properties of light. Which of the following instruments is used in optics?
25. Julia is learning about measuring instruments. She understands that the vernier caliper is used to measure internal and external diameters. What is the main advantage of a vernier caliper over a meter rule?
26. Which is NOT an SI base unit?
27. Nadia is studying significant figures. She understands that trailing zeros in a decimal number are significant. How many significant figures are in 4.500?
28. Fatima is learning about atomic and nuclear physics. She understands that this branch deals with the structure and behavior of atoms and their nuclei. Which of the following is studied in nuclear physics?
29. Zayn is learning about significant figures. He understands that significant figures are the digits in a number that carry meaning. How many significant figures are there in 0.00450?
30. Hina is learning about electromagnetism. She understands that electromagnetism deals with electric and magnetic fields and their interactions. Which of the following devices works on electromagnetism?