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 & BiologyWhich of the following properties show that light is a transverse wave?
1. reflection
2. interference
3. diffraction
4. polarization
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology1. | 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 & BiologyWhen light is refracted, which of the following does not change?
1. wavelength
2. frequency
3. velocity
4. amplitude
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe amplitude modulated (AM) radio wave bends appreciably round the corners of a 1m × 1m board but the frequency modulated (FM) wave only negligibly bends. If the average wavelengths of AM and FM waves are \(\lambda_a\) and \(\lambda_f\),
1. \(\lambda_a\) > \(\lambda_f\)
2. \(\lambda_a\) = \(\lambda_f\)
3. \(\lambda_a\) < \(\lambda_f\)
4. we don't have sufficient information to decide about the relation of \(\lambda_a\) and \(\lambda_f\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following sources gives the best monochromatic light?
1. a candle
2. a bulb
3. a mercury tube
4. a laser
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe wavefronts of a light wave travelling in vacuum are given by \(x+y+z=c\). The angle made by the direction of propagation of light with the X-axis is:
1. \(0^{\circ}\)
2. \(45^{\circ}\)
3. \(90^{\circ}\)
4. \({\cos^{-1}\left({1}/{\sqrt{3}}\right )}\)
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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 & BiologyThe inverse square law of intensity (i.e., the intensity \(\propto \frac{1}{r^2})\) is valid for:
1. a point source
2. a line source
3. a plane source
4. a cylindrical source
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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 & Biology