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

283251 If the scattering intensity of a liquid is 8 units at a wavelength of \(500 \mathrm{~nm}\), then the scattering intensity at a wavelength of \(400 \mathrm{~nm}\) will be approximately :

1 13 units
2 16 units
3 20 units
4 24 units
WAVE OPTICS

283252 Two monochromatic light waves of amplitudes \(3 \mathrm{~A}\) and \(2 \mathrm{~A}\) interfering at a point have a phase difference of \(60^{\circ}\). The intensity at that point will be proportional to :

1 \(5 \mathrm{~A}^2\)
2 \(13 \mathrm{~A}^2\)
3 \(7 \mathrm{~A}^2\)
4 \(19 \mathrm{~A}^2\)
WAVE OPTICS

283253 What is the minimum thickness of a thin film required for constructive interference in the reflected light from it?
Given, the refractive index of the film \(=1.5\), wavelength of the light incident on the film = \(600 \mathrm{~nm}\).

1 \(100 \mathrm{~nm}\)
2 \(300 \mathrm{~nm}\)
3 \(50 \mathrm{~nm}\)
4 \(200 \mathrm{~nm}\)
WAVE OPTICS

283254 For the constructive interference the path difference between the two interfering waves must be equal to :

1 \((2 \mathrm{n}+1) \lambda\)
2 \(2 n \pi\)
3 \(\mathrm{n} \lambda\)
4 \((2 n+1) \frac{\lambda}{2}\)
WAVE OPTICS

283251 If the scattering intensity of a liquid is 8 units at a wavelength of \(500 \mathrm{~nm}\), then the scattering intensity at a wavelength of \(400 \mathrm{~nm}\) will be approximately :

1 13 units
2 16 units
3 20 units
4 24 units
WAVE OPTICS

283252 Two monochromatic light waves of amplitudes \(3 \mathrm{~A}\) and \(2 \mathrm{~A}\) interfering at a point have a phase difference of \(60^{\circ}\). The intensity at that point will be proportional to :

1 \(5 \mathrm{~A}^2\)
2 \(13 \mathrm{~A}^2\)
3 \(7 \mathrm{~A}^2\)
4 \(19 \mathrm{~A}^2\)
WAVE OPTICS

283253 What is the minimum thickness of a thin film required for constructive interference in the reflected light from it?
Given, the refractive index of the film \(=1.5\), wavelength of the light incident on the film = \(600 \mathrm{~nm}\).

1 \(100 \mathrm{~nm}\)
2 \(300 \mathrm{~nm}\)
3 \(50 \mathrm{~nm}\)
4 \(200 \mathrm{~nm}\)
WAVE OPTICS

283254 For the constructive interference the path difference between the two interfering waves must be equal to :

1 \((2 \mathrm{n}+1) \lambda\)
2 \(2 n \pi\)
3 \(\mathrm{n} \lambda\)
4 \((2 n+1) \frac{\lambda}{2}\)
WAVE OPTICS

283251 If the scattering intensity of a liquid is 8 units at a wavelength of \(500 \mathrm{~nm}\), then the scattering intensity at a wavelength of \(400 \mathrm{~nm}\) will be approximately :

1 13 units
2 16 units
3 20 units
4 24 units
WAVE OPTICS

283252 Two monochromatic light waves of amplitudes \(3 \mathrm{~A}\) and \(2 \mathrm{~A}\) interfering at a point have a phase difference of \(60^{\circ}\). The intensity at that point will be proportional to :

1 \(5 \mathrm{~A}^2\)
2 \(13 \mathrm{~A}^2\)
3 \(7 \mathrm{~A}^2\)
4 \(19 \mathrm{~A}^2\)
WAVE OPTICS

283253 What is the minimum thickness of a thin film required for constructive interference in the reflected light from it?
Given, the refractive index of the film \(=1.5\), wavelength of the light incident on the film = \(600 \mathrm{~nm}\).

1 \(100 \mathrm{~nm}\)
2 \(300 \mathrm{~nm}\)
3 \(50 \mathrm{~nm}\)
4 \(200 \mathrm{~nm}\)
WAVE OPTICS

283254 For the constructive interference the path difference between the two interfering waves must be equal to :

1 \((2 \mathrm{n}+1) \lambda\)
2 \(2 n \pi\)
3 \(\mathrm{n} \lambda\)
4 \((2 n+1) \frac{\lambda}{2}\)
WAVE OPTICS

283251 If the scattering intensity of a liquid is 8 units at a wavelength of \(500 \mathrm{~nm}\), then the scattering intensity at a wavelength of \(400 \mathrm{~nm}\) will be approximately :

1 13 units
2 16 units
3 20 units
4 24 units
WAVE OPTICS

283252 Two monochromatic light waves of amplitudes \(3 \mathrm{~A}\) and \(2 \mathrm{~A}\) interfering at a point have a phase difference of \(60^{\circ}\). The intensity at that point will be proportional to :

1 \(5 \mathrm{~A}^2\)
2 \(13 \mathrm{~A}^2\)
3 \(7 \mathrm{~A}^2\)
4 \(19 \mathrm{~A}^2\)
WAVE OPTICS

283253 What is the minimum thickness of a thin film required for constructive interference in the reflected light from it?
Given, the refractive index of the film \(=1.5\), wavelength of the light incident on the film = \(600 \mathrm{~nm}\).

1 \(100 \mathrm{~nm}\)
2 \(300 \mathrm{~nm}\)
3 \(50 \mathrm{~nm}\)
4 \(200 \mathrm{~nm}\)
WAVE OPTICS

283254 For the constructive interference the path difference between the two interfering waves must be equal to :

1 \((2 \mathrm{n}+1) \lambda\)
2 \(2 n \pi\)
3 \(\mathrm{n} \lambda\)
4 \((2 n+1) \frac{\lambda}{2}\)