Physics Practice: Measurements & Experimentation (Mock Test 4 - Expert)
1. The Least Count of a Vernier Callipers is $0.01\ \text{cm}$. While measuring the diameter of a rod, the main scale reads $3.2\ \text{cm}$ and the 8th Vernier division coincides with a main scale division. The diameter is:
2. Which of the following relationships for a simple pendulum is mathematically correct according to the laws of pendulum?
3. A screw gauge has $100$ divisions on its circular scale and a pitch of $1\ \text{mm}$. If the zero of the circular scale is $3$ divisions below the index line when jaws are closed, the zero error is:
4. The distance travelled by light in vacuum in $\frac{1}{299,792,458}$ of a second is defined as:
5. If the length of a simple pendulum is halved and the mass of the bob is doubled, the new time period $T'$ will be:
6. The distance between two consecutive threads of a screw measured along its axis is called its:
7. A clock which uses the vibrations of a specific atom for timekeeping is called an:
8. "Parsec" is a unit used to measure which physical quantity?
9. Significant figures in the measurement $0.005080\ \text{km}$ are:
10. To avoid "Backlash Error" in a screw gauge, one should:
11. $1\ \text{Angstrom }(\text{\AA})$ is equal to:
12. The time period of a simple pendulum on the Moon ________ because $g$ is ________.
13. Which part of the Vernier callipers is used to measure the thickness of a metal sheet?
14. If $n$ divisions of the vernier scale coincide with $(n-1)$ divisions of the main scale (value $x$), the Vernier Constant is:
15. A physical quantity which has both magnitude and unit but no specific direction is a:
16. $1\ \text{unified atomic mass unit (u)}$ is defined as $\frac{1}{12}$ of the mass of an atom of:
17. While using a screw gauge, if the zero of circular scale is exactly on the index line, the error is:
18. The slope of $l$ versus $T^2$ graph for a simple pendulum is equal to:
19. The prefix "Nano" stands for the factor:
20. The fundamental S.I. unit of Luminous Intensity is: