MCQOPTIONS
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MCQOPTIONS
This section includes 38 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A digit zero in a measurement |
| A. | May be significant may not significant |
| B. | Always significant |
| C. | Always insignificantsig |
| D. | Significant only if left to a significant figure |
| Answer» B. Always significant | |
| 2. |
Absolute uncertainty in a measurement depends upon |
| A. | Magnitude of the measurement |
| B. | Least count of the instrument |
| C. | Percentage error in the measurement |
| D. | All of a, b and c |
| Answer» C. Percentage error in the measurement | |
| 3. |
An ideal standard of measurement of a base quantity has characteristics |
| A. | Accessible |
| B. | Invariable |
| C. | Transportable |
| D. | Only a and b are correct |
| Answer» E. | |
| 4. |
Dimensional analysis is helpful for |
| A. | Deriving a possible formula |
| B. | Checking the homogeneity of a physical equation |
| C. | Verification of laws |
| D. | Only a and b are correct |
| Answer» E. | |
| 5. |
How many types of units are in SI? |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» D. Four | |
| 6. |
How many main frontiers of fundamental science? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 7. |
In any measurement the significant figures are |
| A. | All accurately known and all doubtful digits |
| B. | Only accurately known digits |
| C. | Only doubtful digits |
| D. | All accurately known digits and the first doubuful digit |
| Answer» E. | |
| 8. |
In multiplication and division of measurement |
| A. | Percentage uncertainties are added |
| B. | Absolute uncertainties are added |
| C. | Percentage uncertainties are divided |
| D. | Absolute uncertainties are divided |
| Answer» B. Absolute uncertainties are added | |
| 9. |
In scientific notation numbers are expressed in |
| A. | Power of ten |
| B. | Powers of two |
| C. | Reciprocal |
| D. | Decimal |
| Answer» B. Powers of two | |
| 10. |
ML-1 T-2 is the dimension of |
| A. | Force |
| B. | Pressure |
| C. | Momentum |
| D. | Energy |
| Answer» C. Momentum | |
| 11. |
Number of significant figures in 0.0173 are |
| A. | Three |
| B. | Four |
| C. | Five |
| D. | Two |
| Answer» B. Four | |
| 12. |
One pico stands for |
| A. | 10 raised to power -15 |
| B. | 10 raised to power -12 |
| C. | 10 raised to power -9 |
| D. | 10 raised to power -6 |
| Answer» C. 10 raised to power -9 | |
| 13. |
Random errors can be reduced by |
| A. | Taking zero correction |
| B. | Comparing the instrument with another more accurate one |
| C. | Taking mean of several measurement |
| D. | All methods explained in a, b and c |
| Answer» D. All methods explained in a, b and c | |
| 14. |
SI unit of coefficient of viscosity is |
| A. | Kg.m.S-1 |
| B. | Kg m-1.S-1 |
| C. | Kg.m.S |
| D. | Kg-1.m-1.S-1 |
| Answer» C. Kg.m.S | |
| 15. |
Smaller the least count of the instrument more is the measurement |
| A. | Accurate |
| B. | Precise |
| C. | Accurate and precise |
| D. | None of these |
| Answer» C. Accurate and precise | |
| 16. |
Steradian is the SI unit of |
| A. | Plane angle |
| B. | Solid angle |
| C. | Both plane angle and solid angle |
| D. | Neither plane angle nor solid angle |
| Answer» C. Both plane angle and solid angle | |
| 17. |
The dimension of force is |
| A. | MLT-1 |
| B. | MLT-2 |
| C. | ML-1T |
| D. | ML-1T-2 |
| Answer» C. ML-1T | |
| 18. |
The error in measurement may occur due to |
| A. | Inexperience of a person |
| B. | The faulty apparantus |
| C. | Inappropriate method |
| D. | Due to all reasons in a, b and c |
| Answer» E. | |
| 19. |
The number 76.85 is rounded off upto two significant figures as |
| A. | 76.8 |
| B. | 77 |
| C. | 76.9 |
| D. | None of these |
| Answer» C. 76.9 | |
| 20. |
The number of categories in which physical quantities are divided are |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» C. Three | |
| 21. |
The number of significant figures in 5.400 are |
| A. | Three |
| B. | Five |
| C. | Two |
| D. | None |
| Answer» E. | |
| 22. |
The uncertainty in a measurement may occur due to |
| A. | Limitation of an instrument |
| B. | Natural variation of the object to be measured |
| C. | Inadequate of technique |
| D. | All given in a , b and c |
| Answer» E. | |
| 23. |
The unit of force is _________ and its symbol is __________. Which is the correct pair? |
| A. | Newton, n |
| B. | Newton, N |
| C. | Newton, n |
| D. | Newton, N |
| Answer» E. | |
| 24. |
The unmber of significant figures in the length of a bar 6200mm measured by meter rod are |
| A. | Four |
| B. | Three |
| C. | Two |
| D. | None of these |
| Answer» B. Three | |
| 25. |
Three students measured length of a needle with meter rod and recorded as : (i) 0.2145m (ii) 0.21m (iii) 0.214m Which one is correct record? |
| A. | Only (i) |
| B. | Only (ii) |
| C. | Only (iii) |
| D. | Both (i) and (ii) |
| Answer» D. Both (i) and (ii) | |
| 26. |
To reduce the uncertainty in the timing experiment |
| A. | Highly precise instrument |
| B. | Conduct at room temperature |
| C. | Count more number of vibration |
| D. | Both a and c |
| Answer» E. | |
| 27. |
Total uncertainty, in result obtained from the subtraction of two measurement, is equal to |
| A. | Sum of their absolute uncertainties |
| B. | Difference of their absolute uncertainties |
| C. | Product of their absolute uncertainties |
| D. | Division of their absolute uncertainties |
| Answer» B. Difference of their absolute uncertainties | |
| 28. |
Unit of G is? |
| A. | Nm2Kg2 |
| B. | Nm2Kg |
| C. | Nm2Kg-2 |
| D. | None |
| Answer» C. Nm2Kg-2 | |
| 29. |
Which branch of science plays an important role in the development of technology and engineering? |
| A. | Chemistry |
| B. | Physics |
| C. | Geology |
| D. | Biology |
| Answer» C. Geology | |
| 30. |
Which equation is not dimensionally correct? |
| A. | E=mc2 |
| B. | Vf=Vi+at |
| C. | S=Vt2 |
| D. | S=1/2at2 |
| Answer» D. S=1/2at2 | |
| 31. |
Which of the following is not a correct representation method for prefixes |
| A. | 1mm |
| B. | 10km |
| C. | 1000um |
| D. | Both (a) and (b) |
| Answer» D. Both (a) and (b) | |
| 32. |
Which one is not a branch of physical sciences? |
| A. | Chemistry |
| B. | Astronomy |
| C. | Geology |
| D. | Biology |
| Answer» E. | |
| 33. |
Which one is the correct representation of the unit of pressure? |
| A. | Newton/Meter2 |
| B. | Newton/meter2 |
| C. | Newton/meter2 |
| D. | Newton/Meter2 |
| Answer» C. Newton/meter2 | |
| 34. |
Which one is the derived quantity in SI units? |
| A. | Electric current |
| B. | Electric charge |
| C. | Plane angle |
| D. | Amount of substance |
| Answer» C. Plane angle | |
| 35. |
Which one is the dimensionally correct equation? |
| A. | F=vt |
| B. | S=Vit+1/2at2 |
| C. | V=St |
| D. | V=f/t |
| Answer» C. V=St | |
| 36. |
Which one is the highest power multiple? |
| A. | Giga |
| B. | Beta |
| C. | Mega |
| D. | Deca |
| Answer» B. Beta | |
| 37. |
Zero error of the instrument is a type of |
| A. | Random error |
| B. | Personal error |
| C. | Systematic error |
| D. | Classified error |
| Answer» D. Classified error | |
| 38. |
Preftix deca represents |
| A. | 10 Raised to power 1 |
| B. | 10 Raised to power 2 |
| C. | 10 Raised to power 3 |
| D. | 10 Raised to power -1 |
| Answer» B. 10 Raised to power 2 | |