- 1(current)
Q. No.A point source emits sound equally in all directions in a non-absorbing medium. Two points, \(P\) and \(Q,\) are at distances of \(2~\text m\) and \(3~\text m,\) respectively, from the source. The ratio of the intensities of the waves at \(P\) and \(Q\) is:
1. \(3:2\)
2. \(2:3\)
3. \(9:4\)
4. \(4:9\)
1. \(3:2\)
2. \(2:3\)
3. \(9:4\)
4. \(4:9\)
Subtopic: Â Energy of Waves |
 77%
Level 2: 60%+
AIPMT - 2005
Hints
The rate of energy transfer in a wave depends:
| 1. | directly on the square of the wave amplitude and square of the wave frequency. |
| 2. | directly on the square of the wave amplitude and square root of the wave frequency. |
| 3. | directly on the wave frequency and square of the wave amplitude. |
| 4. | directly on the wave amplitude and square of the wave frequency. |
Subtopic: Â Energy of Waves |
 75%
Level 2: 60%+
Hints
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Two waves represented by the following equations are travelling in the same medium \(y_1 = 5 \sin2\pi (75t-0.25x)\), \(y_2 = 10 \sin2\pi (150t-0.50x)\). The intensity ratio \(\frac{I_1}{I_2}\) of the two waves will be:
1. \(1:2\)
2. \(1:4\)
3. \(1:8\)
4. \(1:16\)
1. \(1:2\)
2. \(1:4\)
3. \(1:8\)
4. \(1:16\)
Subtopic: Â Energy of Waves |
Level 3: 35%-60%
Hints
- 1(current)
Q. No.
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