Physics Practice: Physical Quantities and Measurement (Mock Test 3 - Advanced)
1. Why is the "displacement of water" method used specifically for irregular solids?
2. How does the "kink" in a clinical thermometer help in taking an accurate reading?
3. When measuring the area of an irregular shape using graph paper, why do we ignore squares that are less than half-covered?
4. A rectangular tank is $5 \text{ m}$ long, $3 \text{ m}$ wide, and $2 \text{ m}$ high. Its capacity in litres is:
5. Why is mercury used in thermometers instead of water?
6. To find the volume of a solid that floats on water (like cork), we must use:
7. Parallax error occurs when:
8. What is the logic behind the "Zero Correction" of a beam balance?
9. Which of the following defines "Area" scientifically?
10. If an object is moved from the Earth to the Moon, its mass ________ but its weight ________.
11. $1 \text{ hectare}$ is equal to the area of a square with a side of:
12. A stopwatch measures time intervals up to an accuracy of:
13. To calculate the volume of a sphere, we need to know its:
14. Why is the unit of area called a "derived unit"?
15. The density of a substance can be calculated if we know its:
16. The correct sequence to measure the volume of a liquid is:
17. $1 \text{ gram}$ is ________ part of $1 \text{ kilogram}$.
18. The prefix 'milli' stands for:
19. An electronic balance is better than a beam balance because:
20. The volume of an irregular solid is $V = V_2 - V_1$. Here $V_2$ represents:
