Assertion: In YDSE bright and dark fringe are equally spaced.
Reason: It only depends upon phase difference.

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.

Solution

If assertion is true but reason is false.

Fringe width is given by

β = $\frac{D λ}{d}$

where, D= distance between slits and screen,

d = distance between coherent sources of light

and A = wavelength of incident light.

The assertion is true but reason is false. Young's Double-slit Experiment depends on distance between slits and screen (D), the wavelength of light used (λ), distance between the two slits (d).

Some More Questions From Wave Optics Chapter

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Wave Optics

Some More Questions From Wave Optics Chapter

What kind of fringes do you expect to observe if white light is used instead of monochromatic light?

Define a wavefront. Using Huygens’ principle, verify the laws of reflection at a plane surface.

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

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For Daily Free Study Material Join wiredfaculty

Wave Optics

Some More Questions From Wave Optics Chapter

What kind of fringes do you expect to observe if white light is used instead of monochromatic light?

Define a wavefront. Using Huygens’ principle, verify the laws of reflection at a plane surface.

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

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

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