Young’s Double Slit Experiment
PHXII10:WAVE OPTICS

368010 Assertion :
If the whole apparatus of Young’s experiment is immersed in water, the fringe width will decrease.
Reason :
The wavelength of light in water is more than that of air.

1 Both Assertion and Reasons are true and the Reason is a correct explanation of the Assertion.
2 Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
3 Assertion is true but the Reason is false.
4 Assertion is false but Reason is true.
PHXII10:WAVE OPTICS

368011 A screen is at a distance D=80 cm from a diaphragm having two narrow slits S1 and S2 which are d=2 mm apart. Slit S1 is covered by a transparent sheet of thickness t1=2.5μm and slit S2 is covered by another sheet of thickness t2=1.25μm. (as in figure). Both sheets are made of same material having refractive index μs=1.40. Water is filled in the space between diaphragm and screen. A monochromatic light beam of wavelength λ=5000A   is incident normally on the diaphragm. Assuming intensity of beam to be uniform, calculate the ratio of intensity of C to maximum intensity of interference pattern obtained on the screen (μw=43).
supporting img

1 0.52
2 0.75
3 0.96
4 0.45
PHXII10:WAVE OPTICS

368013 An air gap of thickness t is present infront of a slit as shown in the figure. The gap between the slits and the screen is filled with a liquid of refractive index μ1. The path difference between S1P and S2P is
supporting img

1 ydD+t(μ11)
2 μ1ydD
3 μ1ydD+t(μ11)
4 t(μ11)
PHXII10:WAVE OPTICS

368014 In Young's double slit experiment the two slits are illuminated by light of wavelength 5890 A   and the angular distance between any two consecutive bright fringes obtained on the screen is 0.2. if the whole apparatus is immersed in water then the angular fringe width will be, (if the refractive index of water is 4/3 ):

1 0.30
2 0.15
3 15
4 30
PHXII10:WAVE OPTICS

368010 Assertion :
If the whole apparatus of Young’s experiment is immersed in water, the fringe width will decrease.
Reason :
The wavelength of light in water is more than that of air.

1 Both Assertion and Reasons are true and the Reason is a correct explanation of the Assertion.
2 Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
3 Assertion is true but the Reason is false.
4 Assertion is false but Reason is true.
PHXII10:WAVE OPTICS

368011 A screen is at a distance D=80 cm from a diaphragm having two narrow slits S1 and S2 which are d=2 mm apart. Slit S1 is covered by a transparent sheet of thickness t1=2.5μm and slit S2 is covered by another sheet of thickness t2=1.25μm. (as in figure). Both sheets are made of same material having refractive index μs=1.40. Water is filled in the space between diaphragm and screen. A monochromatic light beam of wavelength λ=5000A   is incident normally on the diaphragm. Assuming intensity of beam to be uniform, calculate the ratio of intensity of C to maximum intensity of interference pattern obtained on the screen (μw=43).
supporting img

1 0.52
2 0.75
3 0.96
4 0.45
PHXII10:WAVE OPTICS

368012 A double slit apparatus is immersed in a liquid of refractive index 1.33. It has slit separation of 1mm and distance between the plane of slits and screen 1.33m. The slits are illuminated by a parallel beam of light whose wavelength in air is 6300A  . The fringe width is:

1 (1.33×0.63)mm
2 0.631.33mm
3 0.63(1.33)2mm
4 0.63mm
PHXII10:WAVE OPTICS

368013 An air gap of thickness t is present infront of a slit as shown in the figure. The gap between the slits and the screen is filled with a liquid of refractive index μ1. The path difference between S1P and S2P is
supporting img

1 ydD+t(μ11)
2 μ1ydD
3 μ1ydD+t(μ11)
4 t(μ11)
PHXII10:WAVE OPTICS

368014 In Young's double slit experiment the two slits are illuminated by light of wavelength 5890 A   and the angular distance between any two consecutive bright fringes obtained on the screen is 0.2. if the whole apparatus is immersed in water then the angular fringe width will be, (if the refractive index of water is 4/3 ):

1 0.30
2 0.15
3 15
4 30
PHXII10:WAVE OPTICS

368010 Assertion :
If the whole apparatus of Young’s experiment is immersed in water, the fringe width will decrease.
Reason :
The wavelength of light in water is more than that of air.

1 Both Assertion and Reasons are true and the Reason is a correct explanation of the Assertion.
2 Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
3 Assertion is true but the Reason is false.
4 Assertion is false but Reason is true.
PHXII10:WAVE OPTICS

368011 A screen is at a distance D=80 cm from a diaphragm having two narrow slits S1 and S2 which are d=2 mm apart. Slit S1 is covered by a transparent sheet of thickness t1=2.5μm and slit S2 is covered by another sheet of thickness t2=1.25μm. (as in figure). Both sheets are made of same material having refractive index μs=1.40. Water is filled in the space between diaphragm and screen. A monochromatic light beam of wavelength λ=5000A   is incident normally on the diaphragm. Assuming intensity of beam to be uniform, calculate the ratio of intensity of C to maximum intensity of interference pattern obtained on the screen (μw=43).
supporting img

1 0.52
2 0.75
3 0.96
4 0.45
PHXII10:WAVE OPTICS

368012 A double slit apparatus is immersed in a liquid of refractive index 1.33. It has slit separation of 1mm and distance between the plane of slits and screen 1.33m. The slits are illuminated by a parallel beam of light whose wavelength in air is 6300A  . The fringe width is:

1 (1.33×0.63)mm
2 0.631.33mm
3 0.63(1.33)2mm
4 0.63mm
PHXII10:WAVE OPTICS

368013 An air gap of thickness t is present infront of a slit as shown in the figure. The gap between the slits and the screen is filled with a liquid of refractive index μ1. The path difference between S1P and S2P is
supporting img

1 ydD+t(μ11)
2 μ1ydD
3 μ1ydD+t(μ11)
4 t(μ11)
PHXII10:WAVE OPTICS

368014 In Young's double slit experiment the two slits are illuminated by light of wavelength 5890 A   and the angular distance between any two consecutive bright fringes obtained on the screen is 0.2. if the whole apparatus is immersed in water then the angular fringe width will be, (if the refractive index of water is 4/3 ):

1 0.30
2 0.15
3 15
4 30
PHXII10:WAVE OPTICS

368010 Assertion :
If the whole apparatus of Young’s experiment is immersed in water, the fringe width will decrease.
Reason :
The wavelength of light in water is more than that of air.

1 Both Assertion and Reasons are true and the Reason is a correct explanation of the Assertion.
2 Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
3 Assertion is true but the Reason is false.
4 Assertion is false but Reason is true.
PHXII10:WAVE OPTICS

368011 A screen is at a distance D=80 cm from a diaphragm having two narrow slits S1 and S2 which are d=2 mm apart. Slit S1 is covered by a transparent sheet of thickness t1=2.5μm and slit S2 is covered by another sheet of thickness t2=1.25μm. (as in figure). Both sheets are made of same material having refractive index μs=1.40. Water is filled in the space between diaphragm and screen. A monochromatic light beam of wavelength λ=5000A   is incident normally on the diaphragm. Assuming intensity of beam to be uniform, calculate the ratio of intensity of C to maximum intensity of interference pattern obtained on the screen (μw=43).
supporting img

1 0.52
2 0.75
3 0.96
4 0.45
PHXII10:WAVE OPTICS

368012 A double slit apparatus is immersed in a liquid of refractive index 1.33. It has slit separation of 1mm and distance between the plane of slits and screen 1.33m. The slits are illuminated by a parallel beam of light whose wavelength in air is 6300A  . The fringe width is:

1 (1.33×0.63)mm
2 0.631.33mm
3 0.63(1.33)2mm
4 0.63mm
PHXII10:WAVE OPTICS

368013 An air gap of thickness t is present infront of a slit as shown in the figure. The gap between the slits and the screen is filled with a liquid of refractive index μ1. The path difference between S1P and S2P is
supporting img

1 ydD+t(μ11)
2 μ1ydD
3 μ1ydD+t(μ11)
4 t(μ11)
PHXII10:WAVE OPTICS

368014 In Young's double slit experiment the two slits are illuminated by light of wavelength 5890 A   and the angular distance between any two consecutive bright fringes obtained on the screen is 0.2. if the whole apparatus is immersed in water then the angular fringe width will be, (if the refractive index of water is 4/3 ):

1 0.30
2 0.15
3 15
4 30
PHXII10:WAVE OPTICS

368010 Assertion :
If the whole apparatus of Young’s experiment is immersed in water, the fringe width will decrease.
Reason :
The wavelength of light in water is more than that of air.

1 Both Assertion and Reasons are true and the Reason is a correct explanation of the Assertion.
2 Both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
3 Assertion is true but the Reason is false.
4 Assertion is false but Reason is true.
PHXII10:WAVE OPTICS

368011 A screen is at a distance D=80 cm from a diaphragm having two narrow slits S1 and S2 which are d=2 mm apart. Slit S1 is covered by a transparent sheet of thickness t1=2.5μm and slit S2 is covered by another sheet of thickness t2=1.25μm. (as in figure). Both sheets are made of same material having refractive index μs=1.40. Water is filled in the space between diaphragm and screen. A monochromatic light beam of wavelength λ=5000A   is incident normally on the diaphragm. Assuming intensity of beam to be uniform, calculate the ratio of intensity of C to maximum intensity of interference pattern obtained on the screen (μw=43).
supporting img

1 0.52
2 0.75
3 0.96
4 0.45
PHXII10:WAVE OPTICS

368012 A double slit apparatus is immersed in a liquid of refractive index 1.33. It has slit separation of 1mm and distance between the plane of slits and screen 1.33m. The slits are illuminated by a parallel beam of light whose wavelength in air is 6300A  . The fringe width is:

1 (1.33×0.63)mm
2 0.631.33mm
3 0.63(1.33)2mm
4 0.63mm
PHXII10:WAVE OPTICS

368013 An air gap of thickness t is present infront of a slit as shown in the figure. The gap between the slits and the screen is filled with a liquid of refractive index μ1. The path difference between S1P and S2P is
supporting img

1 ydD+t(μ11)
2 μ1ydD
3 μ1ydD+t(μ11)
4 t(μ11)
PHXII10:WAVE OPTICS

368014 In Young's double slit experiment the two slits are illuminated by light of wavelength 5890 A   and the angular distance between any two consecutive bright fringes obtained on the screen is 0.2. if the whole apparatus is immersed in water then the angular fringe width will be, (if the refractive index of water is 4/3 ):

1 0.30
2 0.15
3 15
4 30