| ⇦ | 
| ⇨ |
Hard X-rays for the study of fractures in bones should have a minimum wavelength of 10⁻¹¹ m. The accelerating voltage for electrons in X-ray machine should be
Options
(a) <124.2 kV
(b) >12.4 KV
(c) between 60 kV and 70 kV
(d) (=100 kV)
Correct Answer:
>12.4 KV
Explanation:
Minimum Wavelength λ = hc / eV = (1.242 × 10⁻⁶) / V
V = (1.242 × 10⁻⁶) / 10⁻¹¹ = 124.2 kV
The accelerating voltage for electron in X-ray is 124.2 kV
Related Questions: - A current I flows along the length of an infinitely long, straight, thin walled pipe.
- When a mass m is attached to a spring, it normally extends by 0.2 m.
- In the diffraction pattern of a single slit
- Two blocks of masses m₁=4 kg and m₂= 2kg are connected to the ends of a string
- With what minimum acceleration can a fireman slide down a rope while breaking
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A current I flows along the length of an infinitely long, straight, thin walled pipe.
- When a mass m is attached to a spring, it normally extends by 0.2 m.
- In the diffraction pattern of a single slit
- Two blocks of masses m₁=4 kg and m₂= 2kg are connected to the ends of a string
- With what minimum acceleration can a fireman slide down a rope while breaking
Topics: Dual Nature of Matter and Radiation (150)
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