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Q. No.Soap bubble appears coloured due to the phenomenon of:
1. Interference
2. Diffraction
3. Dispersion
4. Reflection
(A) \(y=a\sin(\omega t)\)
(B) \(y=a\sin(2\omega t)\)
(C) \(y=a\sin\left(\omega t-\phi\right)\)
(D) \(y=a\sin(3\omega t)\)
Identify the waves from the options given below:
| 1. | (B) and (C) only | 2. | (B) and (D) only |
| 3. | (A) and (C) only | 4. | (A) and (B) only |
If an interference pattern has maximum and minimum intensities in a \(36:1\) ratio, then what will be
the ratio of their amplitudes?
1. \(5:7\)
2. \(7:4\)
3. \(4:7\)
4. \(7:5\)
Two superposing waves are represented by the following equations: \(y_1=5 \sin 2 \pi(10{t}-0.1 {x}), {y}_2=10 \sin 2 \pi(10{t}-0.1 {x}).\)
The ratio of intensities \(\dfrac{I_{max}}{I_{min}}\) will be:
1. \(1\)
2. \(9\)
3. \(4\)
4. \(16\)
1. \(7\)
2. \(5\)
3. \(\sqrt{7}\)
4. \(6.5\)
Four coherent sources of intensity \(I\) are superimposed constructively at a point. The intensity at that point is:
1. \(4I\)
2. \(8I\)
3. \(16I\)
4. \(24I\)
If the ratio of amplitudes of two coherent sources producing an interference pattern is \(3:4\), the ratio of intensities at maxima and minima is:
1. \(3:4\)
2. \(9:16\)
3. \(49:1\)
4. \(25:7\)
Two light sources are said to be coherent when their:
| 1. | Amplitudes are equal and have a constant phase difference |
| 2. | Wavelengths are equal. |
| 3. | Intensities are equal. |
| 4. | Frequencies are equal and have a constant phase difference. |
Which statement is true for interference?
| 1. | Two independent sources of light can produce interference pattern. |
| 2. | There is no violation of conservation of energy. |
| 3. | White light cannot produce interference. |
| 4. | The interference pattern can be obtained even if coherent sources are widely apart. |
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