Coherent Sources of Light and interference of Light Constructive, Distractive
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
WAVE OPTICS

283243 In an interference experiment, the spacing between successive maxima or minima is

1 \(\lambda \mathrm{d} / \mathrm{D}\)
2 \(\lambda \mathrm{D} / \mathrm{d}\)
3 \(\mathrm{dD} / \lambda\)
4 \(\lambda \mathrm{d} / 4 \mathrm{D}\)
WAVE OPTICS

283248 Two light rays having the same wavelength in vacuum are in phase initially. Then, the first ray travels a path \(L_I\) through a medium of refractive index \(\mu_1\) while the second ray travels a path \(L_2\) through a medium of refractive index \(\mu_2\). The two waves are then combined to observe interference. The phase difference between the two waves is

1 \(\frac{2 \pi}{\lambda}\left(\frac{L_1}{\mu_1}-\frac{L_2}{\mu_2}\right)\)
2 \(\frac{2 \pi}{\lambda}\left(\mathrm{L}_2-\mathrm{L}_1\right)\)
3 \(\frac{2 \pi}{\lambda}\left(\mu_2 \mathrm{~L}_1-\mu_1 \mathrm{~L}_2\right)\)
4 \(\frac{2 \pi}{\lambda}\left(\mu_1 \mathrm{~L}_1-\mu_2 \mathrm{~L}_2\right)\)
WAVE OPTICS

283249 When two waves of almost equal frequency \(n_1\) and \(n_2\) are produced simultaneously, then the time interval between successive maxima is

1 \(\frac{1}{\mathrm{n}_1+\mathrm{n}_2}\)
2 \(\frac{1}{\mathrm{n}_1}+\frac{1}{\mathrm{n}_2}\)
3 \(\frac{1}{\mathrm{n}_1}-\frac{1}{\mathrm{n}_2}\)
4 \(\frac{1}{\mathrm{n}_1-\mathrm{n}_2}\)
WAVE OPTICS

283255 In a two slit experiment with monochromatic light fringes are obtained on a screen placed at some distance from the slits. If the screen is moved by \(5 \times 10^{-2} \mathrm{~m}\) towards the slits, the change in fringe width is \(3 \times 10^{-5} \mathrm{~m}\). If separation between the slits is \(10^{-3} \mathrm{~m}\), the wavelength of light used is :

1 \(6000 \AA\)
2 \(5000 \AA\)
3 \(3000 \AA\)
4 \(4500 \AA\)
WAVE OPTICS

283243 In an interference experiment, the spacing between successive maxima or minima is

1 \(\lambda \mathrm{d} / \mathrm{D}\)
2 \(\lambda \mathrm{D} / \mathrm{d}\)
3 \(\mathrm{dD} / \lambda\)
4 \(\lambda \mathrm{d} / 4 \mathrm{D}\)
WAVE OPTICS

283248 Two light rays having the same wavelength in vacuum are in phase initially. Then, the first ray travels a path \(L_I\) through a medium of refractive index \(\mu_1\) while the second ray travels a path \(L_2\) through a medium of refractive index \(\mu_2\). The two waves are then combined to observe interference. The phase difference between the two waves is

1 \(\frac{2 \pi}{\lambda}\left(\frac{L_1}{\mu_1}-\frac{L_2}{\mu_2}\right)\)
2 \(\frac{2 \pi}{\lambda}\left(\mathrm{L}_2-\mathrm{L}_1\right)\)
3 \(\frac{2 \pi}{\lambda}\left(\mu_2 \mathrm{~L}_1-\mu_1 \mathrm{~L}_2\right)\)
4 \(\frac{2 \pi}{\lambda}\left(\mu_1 \mathrm{~L}_1-\mu_2 \mathrm{~L}_2\right)\)
WAVE OPTICS

283249 When two waves of almost equal frequency \(n_1\) and \(n_2\) are produced simultaneously, then the time interval between successive maxima is

1 \(\frac{1}{\mathrm{n}_1+\mathrm{n}_2}\)
2 \(\frac{1}{\mathrm{n}_1}+\frac{1}{\mathrm{n}_2}\)
3 \(\frac{1}{\mathrm{n}_1}-\frac{1}{\mathrm{n}_2}\)
4 \(\frac{1}{\mathrm{n}_1-\mathrm{n}_2}\)
WAVE OPTICS

283255 In a two slit experiment with monochromatic light fringes are obtained on a screen placed at some distance from the slits. If the screen is moved by \(5 \times 10^{-2} \mathrm{~m}\) towards the slits, the change in fringe width is \(3 \times 10^{-5} \mathrm{~m}\). If separation between the slits is \(10^{-3} \mathrm{~m}\), the wavelength of light used is :

1 \(6000 \AA\)
2 \(5000 \AA\)
3 \(3000 \AA\)
4 \(4500 \AA\)
WAVE OPTICS

283243 In an interference experiment, the spacing between successive maxima or minima is

1 \(\lambda \mathrm{d} / \mathrm{D}\)
2 \(\lambda \mathrm{D} / \mathrm{d}\)
3 \(\mathrm{dD} / \lambda\)
4 \(\lambda \mathrm{d} / 4 \mathrm{D}\)
WAVE OPTICS

283248 Two light rays having the same wavelength in vacuum are in phase initially. Then, the first ray travels a path \(L_I\) through a medium of refractive index \(\mu_1\) while the second ray travels a path \(L_2\) through a medium of refractive index \(\mu_2\). The two waves are then combined to observe interference. The phase difference between the two waves is

1 \(\frac{2 \pi}{\lambda}\left(\frac{L_1}{\mu_1}-\frac{L_2}{\mu_2}\right)\)
2 \(\frac{2 \pi}{\lambda}\left(\mathrm{L}_2-\mathrm{L}_1\right)\)
3 \(\frac{2 \pi}{\lambda}\left(\mu_2 \mathrm{~L}_1-\mu_1 \mathrm{~L}_2\right)\)
4 \(\frac{2 \pi}{\lambda}\left(\mu_1 \mathrm{~L}_1-\mu_2 \mathrm{~L}_2\right)\)
WAVE OPTICS

283249 When two waves of almost equal frequency \(n_1\) and \(n_2\) are produced simultaneously, then the time interval between successive maxima is

1 \(\frac{1}{\mathrm{n}_1+\mathrm{n}_2}\)
2 \(\frac{1}{\mathrm{n}_1}+\frac{1}{\mathrm{n}_2}\)
3 \(\frac{1}{\mathrm{n}_1}-\frac{1}{\mathrm{n}_2}\)
4 \(\frac{1}{\mathrm{n}_1-\mathrm{n}_2}\)
WAVE OPTICS

283255 In a two slit experiment with monochromatic light fringes are obtained on a screen placed at some distance from the slits. If the screen is moved by \(5 \times 10^{-2} \mathrm{~m}\) towards the slits, the change in fringe width is \(3 \times 10^{-5} \mathrm{~m}\). If separation between the slits is \(10^{-3} \mathrm{~m}\), the wavelength of light used is :

1 \(6000 \AA\)
2 \(5000 \AA\)
3 \(3000 \AA\)
4 \(4500 \AA\)
WAVE OPTICS

283243 In an interference experiment, the spacing between successive maxima or minima is

1 \(\lambda \mathrm{d} / \mathrm{D}\)
2 \(\lambda \mathrm{D} / \mathrm{d}\)
3 \(\mathrm{dD} / \lambda\)
4 \(\lambda \mathrm{d} / 4 \mathrm{D}\)
WAVE OPTICS

283248 Two light rays having the same wavelength in vacuum are in phase initially. Then, the first ray travels a path \(L_I\) through a medium of refractive index \(\mu_1\) while the second ray travels a path \(L_2\) through a medium of refractive index \(\mu_2\). The two waves are then combined to observe interference. The phase difference between the two waves is

1 \(\frac{2 \pi}{\lambda}\left(\frac{L_1}{\mu_1}-\frac{L_2}{\mu_2}\right)\)
2 \(\frac{2 \pi}{\lambda}\left(\mathrm{L}_2-\mathrm{L}_1\right)\)
3 \(\frac{2 \pi}{\lambda}\left(\mu_2 \mathrm{~L}_1-\mu_1 \mathrm{~L}_2\right)\)
4 \(\frac{2 \pi}{\lambda}\left(\mu_1 \mathrm{~L}_1-\mu_2 \mathrm{~L}_2\right)\)
WAVE OPTICS

283249 When two waves of almost equal frequency \(n_1\) and \(n_2\) are produced simultaneously, then the time interval between successive maxima is

1 \(\frac{1}{\mathrm{n}_1+\mathrm{n}_2}\)
2 \(\frac{1}{\mathrm{n}_1}+\frac{1}{\mathrm{n}_2}\)
3 \(\frac{1}{\mathrm{n}_1}-\frac{1}{\mathrm{n}_2}\)
4 \(\frac{1}{\mathrm{n}_1-\mathrm{n}_2}\)
WAVE OPTICS

283255 In a two slit experiment with monochromatic light fringes are obtained on a screen placed at some distance from the slits. If the screen is moved by \(5 \times 10^{-2} \mathrm{~m}\) towards the slits, the change in fringe width is \(3 \times 10^{-5} \mathrm{~m}\). If separation between the slits is \(10^{-3} \mathrm{~m}\), the wavelength of light used is :

1 \(6000 \AA\)
2 \(5000 \AA\)
3 \(3000 \AA\)
4 \(4500 \AA\)