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

283237 If a mica sheet of thickness \(t\) and refractive index \(\mu\) is placed in the path of one of interfering beams in a double slit experiment, then displacement of fringes will be :

1 \(\frac{\mathrm{D}}{\mathrm{d}} \mu \mathrm{t}\)
2 \(\frac{D}{d}(\mu-1) t\)
3 \(\frac{D}{d}(\mu+t) t\)
4 \(\frac{\mathrm{D}}{\mathrm{d}}\left(\mu^2-1\right) \mathrm{t}\)
WAVE OPTICS

283238 Interference fringes are produced on a screen by using two light sources of intensities ' \(I\) ' and '9I'. The phase difference between the beams is \(\frac{\pi}{2}\) at point \(P\) and \(\pi\) at point \(Q\) on the screen. The difference between the resultant intensities at point \(P\) and \(Q\) is

1 \(2 \mathrm{I}\)
2 \(4 \mathrm{I}\)
3 \(6 \mathrm{I}\)
4 \(8 \mathrm{I}\)
WAVE OPTICS

283239 In Young's double slit experiment, the ratio of intensities of bright and dark bands is 16 which means

1 the ratio of their amplitude is 5
2 intensities of individual sources are 25 and 9 units respectively
3 the ratio of their amplitudes is 4
4 intensities of individual sources are 4 and 3 units respectively
WAVE OPTICS

283240 The distance of a point on the screen from two slits in biprism experiment is \(1.8 \times 10^{-5} \mathrm{~m}\) and \(1.23 \times 10^{-5} \mathrm{~m}\). If wavelength of light used is \(6000 \AA\), the fringe formed at that point is

1 \(10^{\text {th }}\) bright
2 \(10^{\text {th }}\) dark
3 \(9^{\text {th }}\) bright
4 \(9^{\text {th }}\) dark
WAVE OPTICS

283237 If a mica sheet of thickness \(t\) and refractive index \(\mu\) is placed in the path of one of interfering beams in a double slit experiment, then displacement of fringes will be :

1 \(\frac{\mathrm{D}}{\mathrm{d}} \mu \mathrm{t}\)
2 \(\frac{D}{d}(\mu-1) t\)
3 \(\frac{D}{d}(\mu+t) t\)
4 \(\frac{\mathrm{D}}{\mathrm{d}}\left(\mu^2-1\right) \mathrm{t}\)
WAVE OPTICS

283238 Interference fringes are produced on a screen by using two light sources of intensities ' \(I\) ' and '9I'. The phase difference between the beams is \(\frac{\pi}{2}\) at point \(P\) and \(\pi\) at point \(Q\) on the screen. The difference between the resultant intensities at point \(P\) and \(Q\) is

1 \(2 \mathrm{I}\)
2 \(4 \mathrm{I}\)
3 \(6 \mathrm{I}\)
4 \(8 \mathrm{I}\)
WAVE OPTICS

283239 In Young's double slit experiment, the ratio of intensities of bright and dark bands is 16 which means

1 the ratio of their amplitude is 5
2 intensities of individual sources are 25 and 9 units respectively
3 the ratio of their amplitudes is 4
4 intensities of individual sources are 4 and 3 units respectively
WAVE OPTICS

283240 The distance of a point on the screen from two slits in biprism experiment is \(1.8 \times 10^{-5} \mathrm{~m}\) and \(1.23 \times 10^{-5} \mathrm{~m}\). If wavelength of light used is \(6000 \AA\), the fringe formed at that point is

1 \(10^{\text {th }}\) bright
2 \(10^{\text {th }}\) dark
3 \(9^{\text {th }}\) bright
4 \(9^{\text {th }}\) dark
WAVE OPTICS

283237 If a mica sheet of thickness \(t\) and refractive index \(\mu\) is placed in the path of one of interfering beams in a double slit experiment, then displacement of fringes will be :

1 \(\frac{\mathrm{D}}{\mathrm{d}} \mu \mathrm{t}\)
2 \(\frac{D}{d}(\mu-1) t\)
3 \(\frac{D}{d}(\mu+t) t\)
4 \(\frac{\mathrm{D}}{\mathrm{d}}\left(\mu^2-1\right) \mathrm{t}\)
WAVE OPTICS

283238 Interference fringes are produced on a screen by using two light sources of intensities ' \(I\) ' and '9I'. The phase difference between the beams is \(\frac{\pi}{2}\) at point \(P\) and \(\pi\) at point \(Q\) on the screen. The difference between the resultant intensities at point \(P\) and \(Q\) is

1 \(2 \mathrm{I}\)
2 \(4 \mathrm{I}\)
3 \(6 \mathrm{I}\)
4 \(8 \mathrm{I}\)
WAVE OPTICS

283239 In Young's double slit experiment, the ratio of intensities of bright and dark bands is 16 which means

1 the ratio of their amplitude is 5
2 intensities of individual sources are 25 and 9 units respectively
3 the ratio of their amplitudes is 4
4 intensities of individual sources are 4 and 3 units respectively
WAVE OPTICS

283240 The distance of a point on the screen from two slits in biprism experiment is \(1.8 \times 10^{-5} \mathrm{~m}\) and \(1.23 \times 10^{-5} \mathrm{~m}\). If wavelength of light used is \(6000 \AA\), the fringe formed at that point is

1 \(10^{\text {th }}\) bright
2 \(10^{\text {th }}\) dark
3 \(9^{\text {th }}\) bright
4 \(9^{\text {th }}\) dark
WAVE OPTICS

283237 If a mica sheet of thickness \(t\) and refractive index \(\mu\) is placed in the path of one of interfering beams in a double slit experiment, then displacement of fringes will be :

1 \(\frac{\mathrm{D}}{\mathrm{d}} \mu \mathrm{t}\)
2 \(\frac{D}{d}(\mu-1) t\)
3 \(\frac{D}{d}(\mu+t) t\)
4 \(\frac{\mathrm{D}}{\mathrm{d}}\left(\mu^2-1\right) \mathrm{t}\)
WAVE OPTICS

283238 Interference fringes are produced on a screen by using two light sources of intensities ' \(I\) ' and '9I'. The phase difference between the beams is \(\frac{\pi}{2}\) at point \(P\) and \(\pi\) at point \(Q\) on the screen. The difference between the resultant intensities at point \(P\) and \(Q\) is

1 \(2 \mathrm{I}\)
2 \(4 \mathrm{I}\)
3 \(6 \mathrm{I}\)
4 \(8 \mathrm{I}\)
WAVE OPTICS

283239 In Young's double slit experiment, the ratio of intensities of bright and dark bands is 16 which means

1 the ratio of their amplitude is 5
2 intensities of individual sources are 25 and 9 units respectively
3 the ratio of their amplitudes is 4
4 intensities of individual sources are 4 and 3 units respectively
WAVE OPTICS

283240 The distance of a point on the screen from two slits in biprism experiment is \(1.8 \times 10^{-5} \mathrm{~m}\) and \(1.23 \times 10^{-5} \mathrm{~m}\). If wavelength of light used is \(6000 \AA\), the fringe formed at that point is

1 \(10^{\text {th }}\) bright
2 \(10^{\text {th }}\) dark
3 \(9^{\text {th }}\) bright
4 \(9^{\text {th }}\) dark