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Q. No.Light is:
| 1. | a wave phenomenon |
| 2. | a particle phenomenon |
| 3. | both particle and wave phenomenon |
| 4. | none of the above |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
| 1. | \(\alpha>\beta\) |
| 2. | \(\beta>\alpha\) |
| 3. | \(\alpha=\beta\) |
| 4. | the relation between \(\alpha~\&~\beta \) cannot be predicted. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | its wavelength and frequency both increase. |
| 2. | its wavelength increases but frequency remains unchanged. |
| 3. | its wavelength decreases but frequency remains unchanged. |
| 4. | its wavelength and frequency both decrease. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe wavefronts of light coming from a distant source of unknown shape are nearly:
1. plane
2. elliptical
3. cylindrical
4. spherical
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor light diverging from a point source:
| (a) | the wavefront is spherical. |
| (b) | the intensity decreases in proportion to the distance squared. |
| (c) | the wavefront is parabolic. |
| (d) | the intensity at the wavefront does not depend on the distance. |
| 1. | (a), (b) | 2. | (a), (c) |
| 3. | (b), (c) | 4. | (c), (d) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
1. \(\dfrac{2 \pi}{\lambda}\left[\left(\mu_{1}-1\right) t+\left(\mu_{2}-1\right) t\right]\)
2. \(\dfrac{2 \pi}{\lambda}\left(\mu_{1}-\mu_{2}\right) t\)
3. \(\dfrac{2 \pi}{\lambda}\left(\dfrac{t}{\mu_{1}}-\dfrac{t}{\mu_{2}}\right)\)
4. \(\dfrac{2 \pi}{\lambda}\left(\dfrac{t}{\mu_{1}}+\dfrac{t}{\mu_{2}}\right)\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo sources are called coherent if they produce waves:
| 1. | of equal wavelength |
| 2. | of equal velocity |
| 3. | having same shape of wavefront |
| 4. | having a constant phase difference |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo coherent sources of different intensities send waves which interfere. The ratio of maximum intensity to the minimum intensity is \(25.\) The intensities of the sources are in the ratio:
1. \(25:1\)
2. \(5:1\)
3. \(9:4\)
4. \(625:1\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe slits in a Young's double-slit experiment have equal width and the source is placed symmetrically with respect to the slits. The intensity at the central fringe is \(I_0.\) If one of the slits is closed, the intensity at this point will be:
1. \(I_0\)
2. \(I_0/4\)
3. \(I_0/2\)
4. \(4I_0\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. \(4\)
2. \(2\)
3. \(5\)
4. \(2.5\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect Chapter Topics:
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