Electrons are accelerated in television tubes through potential differences of about 10 kV. Find the highest frequency of the electro magnetic waves emitted when these electrons strike the screen of the tube. What kind of waves are these?
Answers
The highest frequency of the emitted x-rays when these electrons strike the screen of the tube is 2.42 * 10¹⁸ HZ.
Explanation:
=> According to question,
potential differences, V = 10kv = 10 * 10³ ev
Planck's constant, h = 4.135 * 10⁻¹⁵ eV s
=> Now, V = E/h
= eV/h
= 1e * 10 * 10³ / 4.135 * 10⁻¹⁵ eV s
= 0.242 * 10⁴ ⁺ ¹⁵
= 2.42 * 10¹⁸ HZ
Thus, the highest frequency of the electro magnetic waves emitted when these electrons strike the screen of the tube is 2.42 * 10¹⁸ HZ.
These are X-rays.
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The highest frequency of the emitted x-rays when these electrons strike the screen of the tube is 2.42 * 10¹⁸ HZ.
Explanation:
=> According to question,
potential differences, V = 10kv = 10 * 10³ ev
Planck's constant, h = 4.135 * 10⁻¹⁵ eV s
=> Now, V = E/h
= eV/h
= 1e * 10 * 10³ / 4.135 * 10⁻¹⁵ eV s
= 0.242 * 10⁴ ⁺ ¹⁵
= 2.42 * 10¹⁸ HZ
Thus, the highest frequency of the electro magnetic waves emitted when these electrons strike the screen of the tube is 2.42 * 10¹⁸ HZ.
These are X-rays.