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प्रश्न
When the width of the slit is made double the original width, how would this affect the size and intensity of the central diffraction band?
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उत्तर
When the width of slit is made double the original width intensity will get four times of its original value.
Width of central maximum is given by,
`beta = (2Dlambda)/b`
Where, D = Distance between screen and slit,
λ = Wavelength of the light,
b = Size of slit.
So with the increase in size of slit the width of central maxima decreases. Hence, double the size of the slit would result in half the width of the central maxima.
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संबंधित प्रश्न
Using Huygens's construction of secondary wavelets explain how a diffraction pattern is obtained on a screen due to a narrow slit on which a monochromatic beam of light is incident normally.
State Huygen’s principle.
Define the term wavefront. Using Huygen’s wave theory, verify the law of reflection.
Answer the following question.
Define the term wavefront. Using Huygen's wave theory, verify the law of reflection.
According to Huygens principle, ______.
According to Huygen's construction, relation between old and new wavefront is ______.
Answer the following question briefly and to the point:
What is the phase difference between any two points lying on the same wavefront?
Wavefront means
Is Huygen’s principle valid for longitudinal sound waves?
How is a wavefront different from a ray?
