Wave OpticsYoung's Double Slit Experiment (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 8  11 of 17
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Question number: 8
» Wave Optics » Young's Double Slit Experiment
Question
In Young’s double slit experiment 10^{th} order maximum is obtained at the point of observation in the interference pattern for λ = 7000 Å. If the source is replaced by another one of wavelength 5000 Å then the order of maximum at the same point will be
Choices
Choice (4)  Response  

a.  16^{th} 

b.  12^{th} 

c.  14^{th} 

d.  18^{th} 

Question number: 9
» Wave Optics » Young's Double Slit Experiment
Question
In Young’s experiment the wavelength of red light is 7.5 × 10 ^{5} cm. and that of blue light 5.0 × 10 ^{5} cm. The value of n for which (n + l) ^{th} blue bright band coincides with n ^{th} red bright band is
Choices
Choice (4)  Response  

a.  8 

b.  4 

c.  1 

d.  2 

Question number: 10
» Wave Optics » Young's Double Slit Experiment
Question
In Young’s double slit experiment, carried out with light of wavelength λ = 5000 Å, the distance between the slits is 0.2 mm and the screen is at 200 cm from the slits, The central maximum is at x = 0. The third maximum will be at
Choices
Choice (4)  Response  

a.  1.5 cm 

b.  5.0 cm 

c.  1.67 cm 

d.  0.5 cm 

Question number: 11
» Wave Optics » Young's Double Slit Experiment
Question
The Young’s double slit experiment, the ratio of intensities of bright and dark fringes is 9. This means that
(1) The intensities of individual sources are 5 and 4 units respectively
(2) The intensities of individual sources are 4 and 1 units respectively
(3) The ratio of the their amplitudes is 3
(4) The ratio of their amplitude is 2
Select the correct answers and mark it according to the following codes:
Codes:
Choices
Choice (4)  Response  

a.  2 and 4 are correct 

b.  1, 2 and 3 are correct 

c.  1 and 3 are correct 

d.  1 and 2 are correct 
