| ⇦ | 
| ⇨ |
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 condenser has a capacity 2 μF and is charged to a voltage of 50 V. The energy
- A cyclist is riding with a spped of 27 km/h.As he approaches a circular turn
- The moon’s radius is 1/ 4 that of the earth and its mass is 1 / 80 times that of the earth
- If an electron and a proton have the same de-Broglie wavelength, then the kinetic
- A black body radiates 20 W at temperature 227⁰C. It temperature of the black body
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A condenser has a capacity 2 μF and is charged to a voltage of 50 V. The energy
- A cyclist is riding with a spped of 27 km/h.As he approaches a circular turn
- The moon’s radius is 1/ 4 that of the earth and its mass is 1 / 80 times that of the earth
- If an electron and a proton have the same de-Broglie wavelength, then the kinetic
- A black body radiates 20 W at temperature 227⁰C. It temperature of the black body
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