| ⇦ | 
| ⇨ |
A proton carrying 1 MeV kinetic energy is moving in a circular path of radius R in uniform magnetic field. What should be the energy of an α-particle to describe a circle of same radius in the same field?
Options
(a) 2 MeV
(b) 1 MeV
(c) 0.5 MeV
(d) 4 MeV
Correct Answer:
1 MeV
Explanation:
According to the principal of circular motion in a magnetic field
Fc = Fm ⇒ mv²/R = qvB
⇒ R = mv/qB = P/qB = √2m.k/qB
Rα = √2(4m)K’/2qB
R/Rα =√ K/K’
but R =Rα (given) Thus K=K’=1 MeV
Related Questions: - The frequency of a light wave in a material is 2 x 10¹⁴ Hz and wavelength is 5000Å.
- When germanium is doped with phosphorus what type of semiconductor is produced?
- If an electron and a positron annihilate, the energy released is
- A body revolved around the sun 27 times faster than the earth. What is the ratio
- A ray of light is incident at an angle of incidence i, on one face of a prism
Topics: Magnetic Effects of Current and Magnetism
(167)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The frequency of a light wave in a material is 2 x 10¹⁴ Hz and wavelength is 5000Å.
- When germanium is doped with phosphorus what type of semiconductor is produced?
- If an electron and a positron annihilate, the energy released is
- A body revolved around the sun 27 times faster than the earth. What is the ratio
- A ray of light is incident at an angle of incidence i, on one face of a prism
Topics: Magnetic Effects of Current and Magnetism (167)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply