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Wave Optics
Assertion: A ray of light is incident from outside on a glass sphere surrounded by air. This ray may suffer total internal reflection at second interface.
Reason: If a ray of light goes from denser to rarer medium, it bends away from the normal.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
B.
If both assertion and reason are true but reason is not the correct explanation of assertion.
When a ray of light enters a spherical glass sphere, it is first refracted at first interface and then it strike the inner surface of sphere (second interface) and get totally internally reflected if the angle between the refracted ray and normal to the drop surface is greater than the critical angle (42°, in this case).
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In a single slit diffraction experiment, the width of the slit is made double the original width. How does this affect the size and intensity of the central diffraction band ? Explain.
When a tiny circular obstacle is placed in the path of light from a distant source, a bright spot is seen at the centre of the obstacle. Explain why
The refractive index of glass is 1.520 for red light and 1.525 for blue light. Let D1 and D2 be an of minimum deviation for red and blue light respectively in a prism of this glass. Then
A Young’s double slit experiment uses a monochromatic source. The shape of the interference fringes formed on a screen is
When an unpolarized light of intensity I0 is incident on a polarizing sheet, the intensity of the light which does not get transmitted is
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