MCQOPTIONS
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MCQOPTIONS
This section includes 64 Mcqs, each offering curated multiple-choice questions to sharpen your VITEEE knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Systematic errors can be removed by |
| A. | breaking the instrument |
| B. | buying new instrument |
| C. | recalibrating the instrument |
| D. | dusting the instrument |
| Answer» D. dusting the instrument | |
| 2. |
The satellite around the earth follows a circular path because |
| A. | gravitational force is anti parallel to velocity |
| B. | gravitational force is parallel to velocity |
| C. | gravitational force is anti perpendicular to |
| D. | gravitational force is perpendicular to velocity |
| Answer» E. | |
| 3. |
A white ball of mass 1.0 kg moving with initial speed u = 0.5 ms-1 collides with stationary red ball of same mass, they move forward making angle of 90° between their paths. Their speed is |
| A. | 0.354 ms-1 |
| B. | 1 ms-1 |
| C. | 3 ms-1 |
| D. | 2 ms-1 |
| Answer» B. 1 ms-1 | |
| 4. |
At terminal velocity the |
| A. | air resistance is less than weight |
| B. | air resistance and weight are equal |
| C. | air resistance is more than weight |
| D. | weight is more than air resistance |
| Answer» C. air resistance is more than weight | |
| 5. |
The unification of electromagnetic and weak nuclear forces was done by |
| A. | Faraday |
| B. | Maxwell |
| C. | Abdus Salam |
| D. | Kirchhoff |
| Answer» D. Kirchhoff | |
| 6. |
The total amount of mass and energy together in a system is |
| A. | decreasing |
| B. | increasing |
| C. | constant |
| D. | zero |
| Answer» D. zero | |
| 7. |
The amount by which one oscillation leads or lags behind another is called |
| A. | intensity |
| B. | in phase |
| C. | superposition |
| D. | phase difference |
| Answer» E. | |
| 8. |
If a force of 50 N is applied across the cross-sectional area of 5 * 10-7m2 then stress applied on it is |
| A. | 20 Pa |
| B. | 1 * 108 Pa |
| C. | 100 Pa |
| D. | 50 Pa |
| Answer» C. 100 Pa | |
| 9. |
High quality music only needs frequencies up to |
| A. | 15 Hz |
| B. | 10 Hz |
| C. | 15 kHz |
| D. | 20 kHz |
| Answer» D. 20 kHz | |
| 10. |
The Hall probe is made up of |
| A. | non metals |
| B. | metals |
| C. | radioactive material |
| D. | semiconductor |
| Answer» E. | |
| 11. |
The concentration of matter in a material is |
| A. | mass |
| B. | volume |
| C. | weight |
| D. | density |
| Answer» E. | |
| 12. |
Particles that experience strong force are |
| A. | hadrons |
| B. | leptons |
| C. | softens |
| D. | both A and B |
| Answer» B. leptons | |
| 13. |
The process by which energy is released in the sun is |
| A. | Haber's process |
| B. | fission |
| C. | radioactivity |
| D. | fusion |
| Answer» E. | |
| 14. |
The maximum energy, the x-ray photon can have is |
| A. | e |
| B. | e⁄V |
| C. | V |
| D. | eV |
| Answer» E. | |
| 15. |
Quantum of electromagnetic energy is called |
| A. | photons |
| B. | particles |
| C. | energy |
| D. | waves |
| Answer» B. particles | |
| 16. |
The greater the decay constant |
| A. | the greater the activity |
| B. | the less the activity |
| C. | the less the size |
| D. | the greater the size |
| Answer» B. the less the activity | |
| 17. |
For s.h.m the maximum speed is proportional to |
| A. | acceleration |
| B. | wavelength |
| C. | frequency |
| D. | time |
| Answer» D. time | |
| 18. |
Heavy nuclei have |
| A. | more electrons than neutrons |
| B. | more protons than neutrons |
| C. | more neutrons than protons |
| D. | more neutrons than electrons |
| Answer» D. more neutrons than electrons | |
| 19. |
At absolute zero the volume of gas is equal to |
| A. | 1 m3 |
| B. | 0 m3 |
| C. | 3 m3 |
| D. | 2 m3 |
| Answer» C. 3 m3 | |
| 20. |
In air, alpha particles have range of |
| A. | few centimeters |
| B. | several thousand meters |
| C. | several hundred meters |
| D. | several meters |
| Answer» B. several thousand meters | |
| 21. |
Gamma (γ) radiation are fast moving |
| A. | electrons |
| B. | protons |
| C. | photons |
| D. | neutrons |
| Answer» D. neutrons | |
| 22. |
A helium nucleus comprising of two protons and two neutrons with a charge of 2e is |
| A. | beta particle |
| B. | gamma particle |
| C. | alpha particle |
| D. | negative particle |
| Answer» D. negative particle | |
| 23. |
In nuclide defined by &15&7X, number of protons and neutrons respectively are |
| A. | 7 and 8 |
| B. | 15 and 7 |
| C. | 8 and 6 |
| D. | 23 and 15 |
| Answer» B. 15 and 7 | |
| 24. |
If a C-14 has a half life of 5730 years, then how long will it take for quantity of C-14 in a sample to drop to 1/8 of initial quantity? |
| A. | 2.58 × 104 years |
| B. | 1.44 × 104 years |
| C. | 1.72 × 104 years |
| D. | 2.58 × 104 years |
| Answer» D. 2.58 × 104 years | |
| 25. |
Alpha (α) particles are helium (He) nucleus with a charge of |
| A. | e |
| B. | 2e |
| C. | 3e |
| D. | 4e |
| Answer» C. 3e | |
| 26. |
If nucleus is formed from separate nucleons, then energy is |
| A. | gained |
| B. | released |
| C. | converted |
| D. | absorbed |
| Answer» C. converted | |
| 27. |
New nucleus after alpha particle decays, is called |
| A. | parent nucleus |
| B. | daughter nucleus |
| C. | decayed nucleus |
| D. | undecayed nucleus |
| Answer» C. decayed nucleus | |
| 28. |
If energy is released from a system, it's mass |
| A. | decreases |
| B. | increases |
| C. | constant |
| D. | zero |
| Answer» B. increases | |
| 29. |
1 mole of uranium-238 has potential to emit total energy equal to about |
| A. | 109 J |
| B. | 1010 J |
| C. | 1011 J |
| D. | 1012 J |
| Answer» D. 1012 J | |
| 30. |
As compared to proton, mass of neutron is |
| A. | 10% greater |
| B. | 5% greater |
| C. | 1% greater |
| D. | 0.1% greater |
| Answer» E. | |
| 31. |
Mass excess for U-235 is |
| A. | 0.034 u |
| B. | 0.043 u |
| C. | 0.05 u |
| D. | 0.06 u |
| Answer» C. 0.05 u | |
| 32. |
Minimum energy required to pull nucleus apart is called |
| A. | ionization energy |
| B. | electron affinity |
| C. | chemical energy |
| D. | binding energy |
| Answer» E. | |
| 33. |
Process by which energy is released in sun is |
| A. | fission |
| B. | Habers process |
| C. | fusion |
| D. | radioactivity |
| Answer» D. radioactivity | |
| 34. |
Total amount of mass and energy together in a system is |
| A. | increasing |
| B. | decreasing |
| C. | zero |
| D. | constant |
| Answer» E. | |
| 35. |
Greater decay constant |
| A. | the less the activity |
| B. | the greater the activity |
| C. | the greater the size |
| D. | the less the size |
| Answer» C. the greater the size | |
| 36. |
Activity of one decay per second is equal to |
| A. | 1 Bq |
| B. | 1 atm |
| C. | 1 mol |
| D. | 1 Cd |
| Answer» B. 1 atm | |
| 37. |
Most stable isotope in nature is of |
| A. | iron-56 |
| B. | carbon-12 |
| C. | uranium-235 |
| D. | uranium-238 |
| Answer» B. carbon-12 | |
| 38. |
Time taken by a radioactive substance to decay half is called |
| A. | time delay |
| B. | half life |
| C. | time constant |
| D. | half period |
| Answer» C. time constant | |
| 39. |
At higher energy, bodies have |
| A. | small mass |
| B. | large mass |
| C. | zero mass |
| D. | smaller weight |
| Answer» C. zero mass | |
| 40. |
In gamma emission, change in nucleon number is |
| A. | zero |
| B. | definite |
| C. | increase by 1 |
| D. | decreases by 1 |
| Answer» B. definite | |
| 41. |
1 u is equal to |
| A. | 1.660 × 10-27 kg |
| B. | 2 × 10-27 kg |
| C. | 3 × 10-27 kg |
| D. | 5 × 10-27 kg |
| Answer» B. 2 × 10-27 kg | |
| 42. |
Radioactive decay is a |
| A. | random process |
| B. | non-spontaneous process |
| C. | regular process |
| D. | massive process |
| Answer» B. non-spontaneous process | |
| 43. |
Energy given to nucleus to dismantle it increases the |
| A. | kinetic energy of individual nucleons |
| B. | mechanical energy of individual nucleons |
| C. | potential energy of individual nucleons |
| D. | chemical energy of individual nucleons |
| Answer» D. chemical energy of individual nucleons | |
| 44. |
Activity is proportional to number of |
| A. | daughter nuclei |
| B. | decayed nuclei |
| C. | undecayed nuclei |
| D. | father nuclei |
| Answer» D. father nuclei | |
| 45. |
The average (mean) life for particle decay is |
| A. | 1.145 times greater than half life |
| B. | 1.245 times greater than half life |
| C. | 1.345 times greater than half life |
| D. | 1.445 times greater than half life |
| Answer» E. | |
| 46. |
The half life of radioactive nuclei is |
| A. | 0.693 / λ |
| B. | 0.793 / λ |
| C. | 0.693λ |
| D. | 0.793λ |
| Answer» B. 0.793 / λ | |
| 47. |
The International system of units (SI) of radioactivity activity is |
| A. | Becquerel |
| B. | Curie |
| C. | Fermi |
| D. | Moles |
| Answer» B. Curie | |
| 48. |
As per radioactive decay law, the small amount of disintegration of the isotope in a small period is equal to |
| A. | –λN |
| B. | λN |
| C. | –2λN |
| D. | 2λN |
| Answer» B. λN | |
| 49. |
An atom with even number of protons is more stable possesses higher binding energy per nucleon is fissionable with slow neutrons Which of the following is/are true? |
| A. | only i |
| B. | i & ii |
| C. | i & iii |
| D. | All of these |
| Answer» C. i & iii | |
| 50. |
When the nuclei of U235 is splitted into approximately two equal nuclei, the amount of energy released per nucleon is |
| A. | 0.45 MeV |
| B. | 0.9 MeV |
| C. | 1.35 MeV |
| D. | 1.7 MeV |
| Answer» C. 1.35 MeV | |