| ⇦ | 
| ⇨ |
Electrons used in an electron microscope are accelerated by a voltage of 25 kV. If the voltage is increased associated to 100 kV then the de-Broglie wavelength associated with the electrons would
Options
(a) increase by 2 times
(b) decrease by 2 times
(c) decrease by 4 times
(d) increase by 4 times
Correct Answer:
decrease by 2 times
Explanation:
λ ∞ 1/√V
λ₁ / λ₂ = √ V₂ / V₁ = √ 1000keV / 25 keV = 2
λ₂ = λ₁ / 2
Related Questions: - A spherical conductor of radius 2 m is charged to a potential of 120 V. It is now
- The intensity at the maximum in a Young’s double slit experiment is I₀.
- In a region, the potential is represented by V(x,y,z)=6x-8xy-8y+6yz, where V
- Two identical cells of the same e.m.f. and same internal resistance
- A body of mass 3 kg is under a constant force which cause a displacement
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A spherical conductor of radius 2 m is charged to a potential of 120 V. It is now
- The intensity at the maximum in a Young’s double slit experiment is I₀.
- In a region, the potential is represented by V(x,y,z)=6x-8xy-8y+6yz, where V
- Two identical cells of the same e.m.f. and same internal resistance
- A body of mass 3 kg is under a constant force which cause a displacement
Topics: Dual Nature of Matter and Radiation (150)
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