Light is

1. wave phenomenon

2. particle phenomenon

3. both particle and wave phenomenon

4. None of these

Subtopic:  Diffraction |
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Which of the following properties show that light is a transverse wave?

1. Reflection

2. Interference

3. Diffraction

4. Polarization

Subtopic:  Polarization of Light |
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When light is refracted into a medium,

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

Subtopic:  Huygens' Principle |
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When light is refracted, which of the following does not change?

1. Wavelength

2. Frequency

3. Velocity

4. Amplitude

Subtopic:  Huygens' Principle |
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The 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 \(\lambda_f\)

Subtopic:  Diffraction |
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Which of the following sources gives the best monochromatic light?

1. A candle

2. A bulb

3. A mercury tube

4. A laser

Subtopic:  Young's Double Slit Experiment |
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The 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°

2. 45°

3. 90°

4. cos-1(1/\(\sqrt3\))

Subtopic:  Huygens' Principle |
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The wavefronts of light coming from a distant source of unknown shape are nearly

1. plane

2. elliptical

3. cylindrical

4. spherical

Subtopic:  Huygens' Principle |
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The inverse square law of intensity (i.e., the intensity \(\propto \frac{1}{r^2}\)) is valid for a

1. point source

2. line source

3. plane source

4. cylindrical source

Subtopic:  Huygens' Principle |
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Two 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

Subtopic:  Young's Double Slit Experiment |
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