⇦ | ![]() | ⇨ |
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: - The resistance of a carbon resistor of colour code Red-Red Green Silver is(in kΩ)
- As a result of interference of two coherent sources of light, energy is
- The area of cross-section of one limb of an U-tube is twice that of the other.
- A planar coil having 12 turns carries 15 A current. The coil is oriented with respect
- A stone tied to the end of a string of 1 m long is whirled in a horizontal circle
Topics: Atoms and Nuclei
(136)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The resistance of a carbon resistor of colour code Red-Red Green Silver is(in kΩ)
- As a result of interference of two coherent sources of light, energy is
- The area of cross-section of one limb of an U-tube is twice that of the other.
- A planar coil having 12 turns carries 15 A current. The coil is oriented with respect
- A stone tied to the end of a string of 1 m long is whirled in a horizontal circle
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