Coherent Sources of Light and interference of Light Constructive, Distractive
WAVE OPTICS

283142 Two coherent sources of light interfere. The intensity ratio of two sources is \(1: 4\). For this interference pattern if the value of \(\frac{I_{\max }+I_{\min }}{I_{\max }-I_{\min }}\) is equal to \(\frac{2 \alpha+1}{\beta+3}\), then \(\frac{\alpha}{\beta}\) will be:

1 1.5
2 2
3 0.5
4 1
WAVE OPTICS

283144 The interference pattern is obtained with two coherent light sources of intensity ratio 4:1. And the ratio \(\frac{I_{\max }+I_{\min }}{I_{\max }-I_{\min }}\) is \(\frac{5}{x}\). Then, the value of \(x\) will be equal to :

1 3
2 4
3 2
4 1
WAVE OPTICS

283146 The wavelength of light \(500 \mathrm{~nm}\) is used in a Young's double-slit experiment. The distance between the slits and screen is \(100 \mathrm{~cm}\) and the slits are separated by \(1 \mathrm{~mm}\). Then find distance between fifth \(\left(5^{\text {th }}\right)\) and third \(\left(3^{\text {rd }}\right)\) bright fringes.

1 \(1 \mathrm{~mm}\)
2 \(3 \mathrm{~mm}\)
3 \(2 \mathrm{~mm}\)
4 \(4 \mathrm{~mm}\)
WAVE OPTICS

283147 Estimate the distance for which ray optics is good approximation for an aperture of \(5 \mathrm{~mm}\) and wavelength \(500 \mathrm{~nm}\) ?

1 \(40 \mathrm{~m}\)
2 \(30 \mathrm{~m}\)
3 \(50 \mathrm{~m}\)
4 \(20 \mathrm{~m}\)
WAVE OPTICS

283148 Two identical light waves, propagating in the same direction, have a phase difference \(\delta\). After they superpose the intensity of the resulting wave will be proportional to

1 \(\cos \delta\)
2 \(\cos (\delta / 2)\)
3 \(\cos ^2(\delta / 2)\)
4 \(\cos ^2 \delta\)
WAVE OPTICS

283142 Two coherent sources of light interfere. The intensity ratio of two sources is \(1: 4\). For this interference pattern if the value of \(\frac{I_{\max }+I_{\min }}{I_{\max }-I_{\min }}\) is equal to \(\frac{2 \alpha+1}{\beta+3}\), then \(\frac{\alpha}{\beta}\) will be:

1 1.5
2 2
3 0.5
4 1
WAVE OPTICS

283144 The interference pattern is obtained with two coherent light sources of intensity ratio 4:1. And the ratio \(\frac{I_{\max }+I_{\min }}{I_{\max }-I_{\min }}\) is \(\frac{5}{x}\). Then, the value of \(x\) will be equal to :

1 3
2 4
3 2
4 1
WAVE OPTICS

283146 The wavelength of light \(500 \mathrm{~nm}\) is used in a Young's double-slit experiment. The distance between the slits and screen is \(100 \mathrm{~cm}\) and the slits are separated by \(1 \mathrm{~mm}\). Then find distance between fifth \(\left(5^{\text {th }}\right)\) and third \(\left(3^{\text {rd }}\right)\) bright fringes.

1 \(1 \mathrm{~mm}\)
2 \(3 \mathrm{~mm}\)
3 \(2 \mathrm{~mm}\)
4 \(4 \mathrm{~mm}\)
WAVE OPTICS

283147 Estimate the distance for which ray optics is good approximation for an aperture of \(5 \mathrm{~mm}\) and wavelength \(500 \mathrm{~nm}\) ?

1 \(40 \mathrm{~m}\)
2 \(30 \mathrm{~m}\)
3 \(50 \mathrm{~m}\)
4 \(20 \mathrm{~m}\)
WAVE OPTICS

283148 Two identical light waves, propagating in the same direction, have a phase difference \(\delta\). After they superpose the intensity of the resulting wave will be proportional to

1 \(\cos \delta\)
2 \(\cos (\delta / 2)\)
3 \(\cos ^2(\delta / 2)\)
4 \(\cos ^2 \delta\)
WAVE OPTICS

283142 Two coherent sources of light interfere. The intensity ratio of two sources is \(1: 4\). For this interference pattern if the value of \(\frac{I_{\max }+I_{\min }}{I_{\max }-I_{\min }}\) is equal to \(\frac{2 \alpha+1}{\beta+3}\), then \(\frac{\alpha}{\beta}\) will be:

1 1.5
2 2
3 0.5
4 1
WAVE OPTICS

283144 The interference pattern is obtained with two coherent light sources of intensity ratio 4:1. And the ratio \(\frac{I_{\max }+I_{\min }}{I_{\max }-I_{\min }}\) is \(\frac{5}{x}\). Then, the value of \(x\) will be equal to :

1 3
2 4
3 2
4 1
WAVE OPTICS

283146 The wavelength of light \(500 \mathrm{~nm}\) is used in a Young's double-slit experiment. The distance between the slits and screen is \(100 \mathrm{~cm}\) and the slits are separated by \(1 \mathrm{~mm}\). Then find distance between fifth \(\left(5^{\text {th }}\right)\) and third \(\left(3^{\text {rd }}\right)\) bright fringes.

1 \(1 \mathrm{~mm}\)
2 \(3 \mathrm{~mm}\)
3 \(2 \mathrm{~mm}\)
4 \(4 \mathrm{~mm}\)
WAVE OPTICS

283147 Estimate the distance for which ray optics is good approximation for an aperture of \(5 \mathrm{~mm}\) and wavelength \(500 \mathrm{~nm}\) ?

1 \(40 \mathrm{~m}\)
2 \(30 \mathrm{~m}\)
3 \(50 \mathrm{~m}\)
4 \(20 \mathrm{~m}\)
WAVE OPTICS

283148 Two identical light waves, propagating in the same direction, have a phase difference \(\delta\). After they superpose the intensity of the resulting wave will be proportional to

1 \(\cos \delta\)
2 \(\cos (\delta / 2)\)
3 \(\cos ^2(\delta / 2)\)
4 \(\cos ^2 \delta\)
WAVE OPTICS

283142 Two coherent sources of light interfere. The intensity ratio of two sources is \(1: 4\). For this interference pattern if the value of \(\frac{I_{\max }+I_{\min }}{I_{\max }-I_{\min }}\) is equal to \(\frac{2 \alpha+1}{\beta+3}\), then \(\frac{\alpha}{\beta}\) will be:

1 1.5
2 2
3 0.5
4 1
WAVE OPTICS

283144 The interference pattern is obtained with two coherent light sources of intensity ratio 4:1. And the ratio \(\frac{I_{\max }+I_{\min }}{I_{\max }-I_{\min }}\) is \(\frac{5}{x}\). Then, the value of \(x\) will be equal to :

1 3
2 4
3 2
4 1
WAVE OPTICS

283146 The wavelength of light \(500 \mathrm{~nm}\) is used in a Young's double-slit experiment. The distance between the slits and screen is \(100 \mathrm{~cm}\) and the slits are separated by \(1 \mathrm{~mm}\). Then find distance between fifth \(\left(5^{\text {th }}\right)\) and third \(\left(3^{\text {rd }}\right)\) bright fringes.

1 \(1 \mathrm{~mm}\)
2 \(3 \mathrm{~mm}\)
3 \(2 \mathrm{~mm}\)
4 \(4 \mathrm{~mm}\)
WAVE OPTICS

283147 Estimate the distance for which ray optics is good approximation for an aperture of \(5 \mathrm{~mm}\) and wavelength \(500 \mathrm{~nm}\) ?

1 \(40 \mathrm{~m}\)
2 \(30 \mathrm{~m}\)
3 \(50 \mathrm{~m}\)
4 \(20 \mathrm{~m}\)
WAVE OPTICS

283148 Two identical light waves, propagating in the same direction, have a phase difference \(\delta\). After they superpose the intensity of the resulting wave will be proportional to

1 \(\cos \delta\)
2 \(\cos (\delta / 2)\)
3 \(\cos ^2(\delta / 2)\)
4 \(\cos ^2 \delta\)
WAVE OPTICS

283142 Two coherent sources of light interfere. The intensity ratio of two sources is \(1: 4\). For this interference pattern if the value of \(\frac{I_{\max }+I_{\min }}{I_{\max }-I_{\min }}\) is equal to \(\frac{2 \alpha+1}{\beta+3}\), then \(\frac{\alpha}{\beta}\) will be:

1 1.5
2 2
3 0.5
4 1
WAVE OPTICS

283144 The interference pattern is obtained with two coherent light sources of intensity ratio 4:1. And the ratio \(\frac{I_{\max }+I_{\min }}{I_{\max }-I_{\min }}\) is \(\frac{5}{x}\). Then, the value of \(x\) will be equal to :

1 3
2 4
3 2
4 1
WAVE OPTICS

283146 The wavelength of light \(500 \mathrm{~nm}\) is used in a Young's double-slit experiment. The distance between the slits and screen is \(100 \mathrm{~cm}\) and the slits are separated by \(1 \mathrm{~mm}\). Then find distance between fifth \(\left(5^{\text {th }}\right)\) and third \(\left(3^{\text {rd }}\right)\) bright fringes.

1 \(1 \mathrm{~mm}\)
2 \(3 \mathrm{~mm}\)
3 \(2 \mathrm{~mm}\)
4 \(4 \mathrm{~mm}\)
WAVE OPTICS

283147 Estimate the distance for which ray optics is good approximation for an aperture of \(5 \mathrm{~mm}\) and wavelength \(500 \mathrm{~nm}\) ?

1 \(40 \mathrm{~m}\)
2 \(30 \mathrm{~m}\)
3 \(50 \mathrm{~m}\)
4 \(20 \mathrm{~m}\)
WAVE OPTICS

283148 Two identical light waves, propagating in the same direction, have a phase difference \(\delta\). After they superpose the intensity of the resulting wave will be proportional to

1 \(\cos \delta\)
2 \(\cos (\delta / 2)\)
3 \(\cos ^2(\delta / 2)\)
4 \(\cos ^2 \delta\)