| ⇦ | 
| ⇨ |
The wavelength of Kα line in copper is 1.5Å. The ionisation energy of K electron in copper is
Options
(a) 11.2×10⁻¹⁷ J
(b) 12.9×10⁻¹⁶ J
(c) 1.7×10⁻¹⁵ J
(d) 10×10⁻¹⁶ J
Correct Answer:
12.9×10⁻¹⁶ J
Explanation:
Required ionization energy, E = hc / λ
E = 6.6 × 10⁻³⁴ × 3 × 10⁸ / 1.5 × 10⁻¹°
= 12.9 × 10⁻¹⁶ J
Related Questions: - A particle covers half of its total distance with speed v1 and the rest half distance
- In Young’s double slit experiment, the slit seperation is 1 mm and the screen
- The ratio of radii of planets A and B is K₁ and ratio of accelerations
- The threshold frequency for a certain photosensitive metal is ν₀. When it is illuminated
- Mass defect is known as
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A particle covers half of its total distance with speed v1 and the rest half distance
- In Young’s double slit experiment, the slit seperation is 1 mm and the screen
- The ratio of radii of planets A and B is K₁ and ratio of accelerations
- The threshold frequency for a certain photosensitive metal is ν₀. When it is illuminated
- Mass defect is known as
Topics: Atoms and Nuclei (136)
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