| ⇦ | 
| ⇨ |
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: - When an input signal 1 is applied to a NOT gate, then its output is
- Assertion(A) :The change in kinetic energy of a particle is equal to the work done
- A cell can be balanced against 110 cm and 100 cm of potentiometer wire, respectively
- The total energy of an electron in the first excited state of hydrogen atom
- Four point masses, each of value m, are placed at the corners of a square ABCD
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When an input signal 1 is applied to a NOT gate, then its output is
- Assertion(A) :The change in kinetic energy of a particle is equal to the work done
- A cell can be balanced against 110 cm and 100 cm of potentiometer wire, respectively
- The total energy of an electron in the first excited state of hydrogen atom
- Four point masses, each of value m, are placed at the corners of a square ABCD
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