| ⇦ | 
| ⇨ |
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 body of weight W newton is at the surface of the earth.
- The threshold frequency for a photosensitive metal is 3.3 x 10¹⁴ Hz.
- A spring has time period T. It is cut into n equal parts. The time period of each part
- An electric kettle takes 4A current at 220 V. How much time will it take to boil 1 kg
- If the wavelength of incident light falling on a photosensitive material decreases,
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A body of weight W newton is at the surface of the earth.
- The threshold frequency for a photosensitive metal is 3.3 x 10¹⁴ Hz.
- A spring has time period T. It is cut into n equal parts. The time period of each part
- An electric kettle takes 4A current at 220 V. How much time will it take to boil 1 kg
- If the wavelength of incident light falling on a photosensitive material decreases,
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