- 1(current)
Q. No.A charged particle oscillates about its mean equilibrium position with a frequency of \(10^9\) Hz. What is the frequency of the electromagnetic waves produced by the oscillator?
1. \(10^{11}\) Hz
2. \(10^7\) Hz
3. \(10^8\) Hz
4. \(10^9\) Hz
1. \(10^{11}\) Hz
2. \(10^7\) Hz
3. \(10^8\) Hz
4. \(10^9\) Hz
Subtopic: Â Generation of EM Waves |
 78%
From NCERT
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Which of the following situation(s), can cause the radiation of an electromagnetic wave?
Choose the correct options:
| (A) | a varying sinusoidal current flowing through a capacitor |
| (B) | an electric dipole, whose size (and magnitude) is oscillating with time |
| (C) | a steady current flowing through a toroid |
Choose the correct options:
| 1. | only (A) |
| 2. | only (B) |
| 3. | only (A) & (B) |
| 4. | (A), (B), (C) |
Subtopic: Â Generation of EM Waves |
 65%
From NCERT
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Given below are two statements:
| Assertion (A): | A charge moving in a circular orbit can produce an electromagnetic wave. |
| Reason (R): | The source of the electromagnetic wave should be in accelerated motion. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Â Generation of EM Waves |
 82%
From NCERT
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Please attempt this question first.
The source of electromagnetic waves can be a charge:
| (a) | moving with a constant velocity |
| (b) | moving in a circular orbit |
| (c) | at rest |
| (d) | falling in an electric field |
1. (b), (d)
2. (a), (c)
3. (b), (c)
4. (c), (d)
Subtopic: Â Generation of EM Waves |
 79%
From NCERT
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Q. No.
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