| ⇦ | 
| ⇨ |
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: - The young’s modulus of steel is twice that of brass. Two wires of same length
- Two coils have the mutual inductance of 0.05 H.
- An electron in the hydrogen atom jumps from excited state n to the ground state
- The temperature of a body falls from 50⁰C to 40⁰C in 10 minute. If the temperature
- A generator at a utility company produces 100 A of current at 4000 V. The voltage
Topics: Dual Nature of Matter and Radiation
(150)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The young’s modulus of steel is twice that of brass. Two wires of same length
- Two coils have the mutual inductance of 0.05 H.
- An electron in the hydrogen atom jumps from excited state n to the ground state
- The temperature of a body falls from 50⁰C to 40⁰C in 10 minute. If the temperature
- A generator at a utility company produces 100 A of current at 4000 V. The voltage
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