De Broglie wavelength when the kinetic energy or accelerating potential changes
This type of question, asked 14 times: May 2022 S1, 4 May 2023 S2, 10 May 2023 S1, 11 May 2023 S1, 15 May 2023 S1, 10 May 2024 S1, 10 May 2024 S2, 12 May 2024 S2, 14 May 2024 S1, 19 Apr 2025 S2, 23 Apr 2025 S1, 13 Apr 2026 S2, 17 Apr 2026 S1, 18 Apr 2026 S1. All 14 questions below, oldest first.
Try each one first, then open its answer.
Question 1
May 2022 S1
12If the kinetic energy of a free electron doubles, its de Broglie wavelength changes by a factorTap an option to check your answer.
Question 2
4 May 2023 S2
27The kinetic energy of an electron is increased by 2 times, then the de-Broglie wavelength associated with it changes by a factor.Tap an option to check your answer.
Question 3
10 May 2023 S1
44If the potential difference used to accelerate electrons is increased four times, by what factor does the de Broglie wavelength associated with the electrons change?Tap an option to check your answer.
Question 4
11 May 2023 S1
43If the potential difference used to accelerate electrons is doubled. By what factor does the de Broglie wavelength () associated with the electrons change?Tap an option to check your answer.
Question 5
15 May 2023 S1
29Electrons are accelerated through a potential difference of 16 kV. If the potential difference is increased to 64 kV, then de-Broglie wavelength associated with electron willTap an option to check your answer.
Question 6
10 May 2024 S1
21An electron accelerated through potential has de Broglie wavelength . When potential changes to wavelength increases by 50%. The value of isTap an option to check your answer.
Question 7
10 May 2024 S2
28If the potential difference used to accelerate electrons is doubled, by what factor does the de-Broglie wavelength associated with electrons change?Tap an option to check your answer.
Question 8
12 May 2024 S2
47When an electron is accelerated through a potential difference '', the de-Broglie wavelength associated with it is ''. When the accelerating potential is increased to , its wavelength will beTap an option to check your answer.
Question 9
14 May 2024 S1
38The de-Broglie wavelength () of a particle is related to its kinetic energy (E) asTap an option to check your answer.
Question 10
19 Apr 2025 S2
24An electron accelerated by a potential difference ' ' has de-Broglie wavelength ' '. If the electron is accelerated by a potential difference ' 9 V ', its de-Broglie wavelength will beTap an option to check your answer.
Question 11
23 Apr 2025 S1
27The energy that should be added to an electron to reduce its de-Broglie wavelength from to is times the initial energy. The value of ' ' isTap an option to check your answer.
Question 12
13 Apr 2026 S2
145An electron accelerated through a potential difference has a de-Broglie wavelength of . When the potential is changed to , its de-Broglie wavelength increases to . The value of is equal toTap an option to check your answer.
Question 13
17 Apr 2026 S1
144The kinetic energy of a free electron increases to 3 times the previous K.E. The ratio of new de-Broglie wavelength to previous de-Broglie wavelength isTap an option to check your answer.
Question 14
18 Apr 2026 S1
144If the kinetic energy of a particle is increased to 16 times, the percentage change in the de Broglie wavelength of a particle isTap an option to check your answer.