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

283293 Using Young's double slit experiment, a monochromatic light of wavelength \(5000 \AA\) produces fringes off fringe width \(0.5 \mathrm{~mm}\). If another monochromatic light of wavelength \(6000 \AA\) is used and the separation between the slits is doubled, then the new fringe width will be :

1 \(0.5 \mathrm{~mm}\)
2 \(1.0 \mathrm{~mm}\)
3 \(0.6 \mathrm{~mm}\)
4 \(0.3 \mathrm{~mm}\)
WAVE OPTICS

283295 In Young's double slit experiment for what order does the wavelength of real light \((\lambda=\) \(780 \mathrm{~nm})\) coincide with \((m+1)^{\text {th }}\) order of blue light \((\lambda=520 \mathrm{~nm})\)

1 1
2 2
3 3
4 4
WAVE OPTICS

283296 A young's double slit experiment apparatus has slits separated by \(0.2 \mathrm{~mm}\) and a screen \(60 \mathrm{~cm}\) away from the slits. The whole apparatus is immersed in a liquid medium of refractive index \(\frac{11}{9}\) and the slits are illuminated with green light \((\lambda=550 \mathrm{~nm}\) in vacuum). Find the fringe width of the pattern formed on the screen.

1 \(0.95 \mathrm{~mm}\)
2 \(1.25 \mathrm{~mm}\)
3 \(1.35 \mathrm{~mm}\)
4 \(1.45 \mathrm{~mm}\)
WAVE OPTICS

283297 In a double-slit experiment performed in air the angular width of a fringe is found to be \(0.15^{\circ}\) on a screen placed \(80 \mathrm{~cm}\) away. The wavelength of light used is \(490 \mathrm{~nm}\). The angular width of the fringe if the entire apparatus is immersed in a medium of refractive index \(\frac{5}{\mathbf{3}}\) is

1 \(0.09^{\circ}\)
2 \(0.7^{\circ}\)
3 \(0.9^{\circ}\)
4 \(0.11^{\circ}\)
WAVE OPTICS

283298 In an interference pattern of Young's double slit experiment, at a point we observe the \(12^{\text {th }}\) order maximum for a monochromatic light source with wavelength \(6000 \AA\). What order will be visible here if the source is replaced by a light of wavelength \(4800 \AA\) ?

1 15
2 10
3 8
4 18
WAVE OPTICS

283293 Using Young's double slit experiment, a monochromatic light of wavelength \(5000 \AA\) produces fringes off fringe width \(0.5 \mathrm{~mm}\). If another monochromatic light of wavelength \(6000 \AA\) is used and the separation between the slits is doubled, then the new fringe width will be :

1 \(0.5 \mathrm{~mm}\)
2 \(1.0 \mathrm{~mm}\)
3 \(0.6 \mathrm{~mm}\)
4 \(0.3 \mathrm{~mm}\)
WAVE OPTICS

283295 In Young's double slit experiment for what order does the wavelength of real light \((\lambda=\) \(780 \mathrm{~nm})\) coincide with \((m+1)^{\text {th }}\) order of blue light \((\lambda=520 \mathrm{~nm})\)

1 1
2 2
3 3
4 4
WAVE OPTICS

283296 A young's double slit experiment apparatus has slits separated by \(0.2 \mathrm{~mm}\) and a screen \(60 \mathrm{~cm}\) away from the slits. The whole apparatus is immersed in a liquid medium of refractive index \(\frac{11}{9}\) and the slits are illuminated with green light \((\lambda=550 \mathrm{~nm}\) in vacuum). Find the fringe width of the pattern formed on the screen.

1 \(0.95 \mathrm{~mm}\)
2 \(1.25 \mathrm{~mm}\)
3 \(1.35 \mathrm{~mm}\)
4 \(1.45 \mathrm{~mm}\)
WAVE OPTICS

283297 In a double-slit experiment performed in air the angular width of a fringe is found to be \(0.15^{\circ}\) on a screen placed \(80 \mathrm{~cm}\) away. The wavelength of light used is \(490 \mathrm{~nm}\). The angular width of the fringe if the entire apparatus is immersed in a medium of refractive index \(\frac{5}{\mathbf{3}}\) is

1 \(0.09^{\circ}\)
2 \(0.7^{\circ}\)
3 \(0.9^{\circ}\)
4 \(0.11^{\circ}\)
WAVE OPTICS

283298 In an interference pattern of Young's double slit experiment, at a point we observe the \(12^{\text {th }}\) order maximum for a monochromatic light source with wavelength \(6000 \AA\). What order will be visible here if the source is replaced by a light of wavelength \(4800 \AA\) ?

1 15
2 10
3 8
4 18
WAVE OPTICS

283293 Using Young's double slit experiment, a monochromatic light of wavelength \(5000 \AA\) produces fringes off fringe width \(0.5 \mathrm{~mm}\). If another monochromatic light of wavelength \(6000 \AA\) is used and the separation between the slits is doubled, then the new fringe width will be :

1 \(0.5 \mathrm{~mm}\)
2 \(1.0 \mathrm{~mm}\)
3 \(0.6 \mathrm{~mm}\)
4 \(0.3 \mathrm{~mm}\)
WAVE OPTICS

283295 In Young's double slit experiment for what order does the wavelength of real light \((\lambda=\) \(780 \mathrm{~nm})\) coincide with \((m+1)^{\text {th }}\) order of blue light \((\lambda=520 \mathrm{~nm})\)

1 1
2 2
3 3
4 4
WAVE OPTICS

283296 A young's double slit experiment apparatus has slits separated by \(0.2 \mathrm{~mm}\) and a screen \(60 \mathrm{~cm}\) away from the slits. The whole apparatus is immersed in a liquid medium of refractive index \(\frac{11}{9}\) and the slits are illuminated with green light \((\lambda=550 \mathrm{~nm}\) in vacuum). Find the fringe width of the pattern formed on the screen.

1 \(0.95 \mathrm{~mm}\)
2 \(1.25 \mathrm{~mm}\)
3 \(1.35 \mathrm{~mm}\)
4 \(1.45 \mathrm{~mm}\)
WAVE OPTICS

283297 In a double-slit experiment performed in air the angular width of a fringe is found to be \(0.15^{\circ}\) on a screen placed \(80 \mathrm{~cm}\) away. The wavelength of light used is \(490 \mathrm{~nm}\). The angular width of the fringe if the entire apparatus is immersed in a medium of refractive index \(\frac{5}{\mathbf{3}}\) is

1 \(0.09^{\circ}\)
2 \(0.7^{\circ}\)
3 \(0.9^{\circ}\)
4 \(0.11^{\circ}\)
WAVE OPTICS

283298 In an interference pattern of Young's double slit experiment, at a point we observe the \(12^{\text {th }}\) order maximum for a monochromatic light source with wavelength \(6000 \AA\). What order will be visible here if the source is replaced by a light of wavelength \(4800 \AA\) ?

1 15
2 10
3 8
4 18
WAVE OPTICS

283293 Using Young's double slit experiment, a monochromatic light of wavelength \(5000 \AA\) produces fringes off fringe width \(0.5 \mathrm{~mm}\). If another monochromatic light of wavelength \(6000 \AA\) is used and the separation between the slits is doubled, then the new fringe width will be :

1 \(0.5 \mathrm{~mm}\)
2 \(1.0 \mathrm{~mm}\)
3 \(0.6 \mathrm{~mm}\)
4 \(0.3 \mathrm{~mm}\)
WAVE OPTICS

283295 In Young's double slit experiment for what order does the wavelength of real light \((\lambda=\) \(780 \mathrm{~nm})\) coincide with \((m+1)^{\text {th }}\) order of blue light \((\lambda=520 \mathrm{~nm})\)

1 1
2 2
3 3
4 4
WAVE OPTICS

283296 A young's double slit experiment apparatus has slits separated by \(0.2 \mathrm{~mm}\) and a screen \(60 \mathrm{~cm}\) away from the slits. The whole apparatus is immersed in a liquid medium of refractive index \(\frac{11}{9}\) and the slits are illuminated with green light \((\lambda=550 \mathrm{~nm}\) in vacuum). Find the fringe width of the pattern formed on the screen.

1 \(0.95 \mathrm{~mm}\)
2 \(1.25 \mathrm{~mm}\)
3 \(1.35 \mathrm{~mm}\)
4 \(1.45 \mathrm{~mm}\)
WAVE OPTICS

283297 In a double-slit experiment performed in air the angular width of a fringe is found to be \(0.15^{\circ}\) on a screen placed \(80 \mathrm{~cm}\) away. The wavelength of light used is \(490 \mathrm{~nm}\). The angular width of the fringe if the entire apparatus is immersed in a medium of refractive index \(\frac{5}{\mathbf{3}}\) is

1 \(0.09^{\circ}\)
2 \(0.7^{\circ}\)
3 \(0.9^{\circ}\)
4 \(0.11^{\circ}\)
WAVE OPTICS

283298 In an interference pattern of Young's double slit experiment, at a point we observe the \(12^{\text {th }}\) order maximum for a monochromatic light source with wavelength \(6000 \AA\). What order will be visible here if the source is replaced by a light of wavelength \(4800 \AA\) ?

1 15
2 10
3 8
4 18
WAVE OPTICS

283293 Using Young's double slit experiment, a monochromatic light of wavelength \(5000 \AA\) produces fringes off fringe width \(0.5 \mathrm{~mm}\). If another monochromatic light of wavelength \(6000 \AA\) is used and the separation between the slits is doubled, then the new fringe width will be :

1 \(0.5 \mathrm{~mm}\)
2 \(1.0 \mathrm{~mm}\)
3 \(0.6 \mathrm{~mm}\)
4 \(0.3 \mathrm{~mm}\)
WAVE OPTICS

283295 In Young's double slit experiment for what order does the wavelength of real light \((\lambda=\) \(780 \mathrm{~nm})\) coincide with \((m+1)^{\text {th }}\) order of blue light \((\lambda=520 \mathrm{~nm})\)

1 1
2 2
3 3
4 4
WAVE OPTICS

283296 A young's double slit experiment apparatus has slits separated by \(0.2 \mathrm{~mm}\) and a screen \(60 \mathrm{~cm}\) away from the slits. The whole apparatus is immersed in a liquid medium of refractive index \(\frac{11}{9}\) and the slits are illuminated with green light \((\lambda=550 \mathrm{~nm}\) in vacuum). Find the fringe width of the pattern formed on the screen.

1 \(0.95 \mathrm{~mm}\)
2 \(1.25 \mathrm{~mm}\)
3 \(1.35 \mathrm{~mm}\)
4 \(1.45 \mathrm{~mm}\)
WAVE OPTICS

283297 In a double-slit experiment performed in air the angular width of a fringe is found to be \(0.15^{\circ}\) on a screen placed \(80 \mathrm{~cm}\) away. The wavelength of light used is \(490 \mathrm{~nm}\). The angular width of the fringe if the entire apparatus is immersed in a medium of refractive index \(\frac{5}{\mathbf{3}}\) is

1 \(0.09^{\circ}\)
2 \(0.7^{\circ}\)
3 \(0.9^{\circ}\)
4 \(0.11^{\circ}\)
WAVE OPTICS

283298 In an interference pattern of Young's double slit experiment, at a point we observe the \(12^{\text {th }}\) order maximum for a monochromatic light source with wavelength \(6000 \AA\). What order will be visible here if the source is replaced by a light of wavelength \(4800 \AA\) ?

1 15
2 10
3 8
4 18