| ⇦ | 
| ⇨ |
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 toroid having 200 turns carries a current of 1 A. The average radius of the toroid
- A particle A suffers on oblique elastic collision with a particle B that
- A plank with a box on it at one end is gradually raised about the other end.
- An electron moving in a circular orbit of radius r makes n rotations per second.
- If two electric bulbs have 40 W and 60 W ratings at 220 V, then the ratio
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A toroid having 200 turns carries a current of 1 A. The average radius of the toroid
- A particle A suffers on oblique elastic collision with a particle B that
- A plank with a box on it at one end is gradually raised about the other end.
- An electron moving in a circular orbit of radius r makes n rotations per second.
- If two electric bulbs have 40 W and 60 W ratings at 220 V, then the ratio
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