Young’s Double Slit Experiment
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PHXII10:WAVE OPTICS

368081 In Young's experiment, two coherent sources are placed \(0.90\;mm\) apart and fringes are observed one metre away. If it produces second dark fringe at a distance of \(1\;mm\) from central fringe, the wavelength of monochromatic light is used would be:

1 \(60 \times {10^{ - 4}}\;cm\)
2 \(10 \times {10^{ - 4}}\;cm\)
3 \(10 \times {10^{ - 5}}\;cm\)
4 \(6 \times {10^{ - 5}}\;cm\)
PHXII10:WAVE OPTICS

368082 In Young's double slit experiment, the intensity of light at a point on the screen where the path different is \(\lambda=I\). The intensity of light at point where the path difference becomes \(\dfrac{\lambda}{3}\) is

1 \(\dfrac{I}{4}\)
2 \(\dfrac{I}{3}\)
3 \(\dfrac{I}{2}\)
4 \(I\)
PHXII10:WAVE OPTICS

368083 Assertion :
No interference pattern is detected when two coherent sources are very close to each other.
Reason :
In \(YDSE\) the fringe width is inversely proportional to the distance between the slits.

1 Both Assertion and Reasons are true and the Reason is a correct explanation of the Assertion.
2 Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
3 Assertion is true but the Reason is false.
4 Assertion is false but Reason is true.
PHXII10:WAVE OPTICS

368084 In the Young’s double-slit experiment, the intensity of light at a point on the screen (where the path difference is \(\lambda \)) is \(K\), (\(\lambda \) being the wavelength of light used). The intensity at a point where the path difference is \(\lambda /4,\) will be

1 Zero
2 \(K/2\)
3 \(K\)
4 \(K/4\)
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PHXII10:WAVE OPTICS

368081 In Young's experiment, two coherent sources are placed \(0.90\;mm\) apart and fringes are observed one metre away. If it produces second dark fringe at a distance of \(1\;mm\) from central fringe, the wavelength of monochromatic light is used would be:

1 \(60 \times {10^{ - 4}}\;cm\)
2 \(10 \times {10^{ - 4}}\;cm\)
3 \(10 \times {10^{ - 5}}\;cm\)
4 \(6 \times {10^{ - 5}}\;cm\)
PHXII10:WAVE OPTICS

368082 In Young's double slit experiment, the intensity of light at a point on the screen where the path different is \(\lambda=I\). The intensity of light at point where the path difference becomes \(\dfrac{\lambda}{3}\) is

1 \(\dfrac{I}{4}\)
2 \(\dfrac{I}{3}\)
3 \(\dfrac{I}{2}\)
4 \(I\)
PHXII10:WAVE OPTICS

368083 Assertion :
No interference pattern is detected when two coherent sources are very close to each other.
Reason :
In \(YDSE\) the fringe width is inversely proportional to the distance between the slits.

1 Both Assertion and Reasons are true and the Reason is a correct explanation of the Assertion.
2 Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
3 Assertion is true but the Reason is false.
4 Assertion is false but Reason is true.
PHXII10:WAVE OPTICS

368084 In the Young’s double-slit experiment, the intensity of light at a point on the screen (where the path difference is \(\lambda \)) is \(K\), (\(\lambda \) being the wavelength of light used). The intensity at a point where the path difference is \(\lambda /4,\) will be

1 Zero
2 \(K/2\)
3 \(K\)
4 \(K/4\)
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PHXII10:WAVE OPTICS

368081 In Young's experiment, two coherent sources are placed \(0.90\;mm\) apart and fringes are observed one metre away. If it produces second dark fringe at a distance of \(1\;mm\) from central fringe, the wavelength of monochromatic light is used would be:

1 \(60 \times {10^{ - 4}}\;cm\)
2 \(10 \times {10^{ - 4}}\;cm\)
3 \(10 \times {10^{ - 5}}\;cm\)
4 \(6 \times {10^{ - 5}}\;cm\)
PHXII10:WAVE OPTICS

368082 In Young's double slit experiment, the intensity of light at a point on the screen where the path different is \(\lambda=I\). The intensity of light at point where the path difference becomes \(\dfrac{\lambda}{3}\) is

1 \(\dfrac{I}{4}\)
2 \(\dfrac{I}{3}\)
3 \(\dfrac{I}{2}\)
4 \(I\)
PHXII10:WAVE OPTICS

368083 Assertion :
No interference pattern is detected when two coherent sources are very close to each other.
Reason :
In \(YDSE\) the fringe width is inversely proportional to the distance between the slits.

1 Both Assertion and Reasons are true and the Reason is a correct explanation of the Assertion.
2 Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
3 Assertion is true but the Reason is false.
4 Assertion is false but Reason is true.
PHXII10:WAVE OPTICS

368084 In the Young’s double-slit experiment, the intensity of light at a point on the screen (where the path difference is \(\lambda \)) is \(K\), (\(\lambda \) being the wavelength of light used). The intensity at a point where the path difference is \(\lambda /4,\) will be

1 Zero
2 \(K/2\)
3 \(K\)
4 \(K/4\)
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PHXII10:WAVE OPTICS

368081 In Young's experiment, two coherent sources are placed \(0.90\;mm\) apart and fringes are observed one metre away. If it produces second dark fringe at a distance of \(1\;mm\) from central fringe, the wavelength of monochromatic light is used would be:

1 \(60 \times {10^{ - 4}}\;cm\)
2 \(10 \times {10^{ - 4}}\;cm\)
3 \(10 \times {10^{ - 5}}\;cm\)
4 \(6 \times {10^{ - 5}}\;cm\)
PHXII10:WAVE OPTICS

368082 In Young's double slit experiment, the intensity of light at a point on the screen where the path different is \(\lambda=I\). The intensity of light at point where the path difference becomes \(\dfrac{\lambda}{3}\) is

1 \(\dfrac{I}{4}\)
2 \(\dfrac{I}{3}\)
3 \(\dfrac{I}{2}\)
4 \(I\)
PHXII10:WAVE OPTICS

368083 Assertion :
No interference pattern is detected when two coherent sources are very close to each other.
Reason :
In \(YDSE\) the fringe width is inversely proportional to the distance between the slits.

1 Both Assertion and Reasons are true and the Reason is a correct explanation of the Assertion.
2 Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
3 Assertion is true but the Reason is false.
4 Assertion is false but Reason is true.
PHXII10:WAVE OPTICS

368084 In the Young’s double-slit experiment, the intensity of light at a point on the screen (where the path difference is \(\lambda \)) is \(K\), (\(\lambda \) being the wavelength of light used). The intensity at a point where the path difference is \(\lambda /4,\) will be

1 Zero
2 \(K/2\)
3 \(K\)
4 \(K/4\)
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