Youngs Experiment MCQs : This section focuses on the "Youngs Experiment". These Multiple Choice Questions (MCQs) should be practiced to improve the Youngs Experiment skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
If the separation between the two slits is decreased in Young’s double-slit experiment keeping the screen position fixed, what will happen to the width of the fringe?
A. Decreases
B. Increases
C. Remains the same
D. Independent
Question 2
In Young’s double-slit experiment if the distance between two slits is halved and distance between the slits and the screen is doubled, then what will be the effect on fringe width?
A. Doubled
B. Decreases four times
C. Increases four times
D. Halved
Question 3
In Young’s double-slit experiment with monochromatic light, how is fringe width affected, if the screen is moved closer to the slits?
A. Independent
B. Remains the same
C. Increases
D. Decreases
Question 4
In Young’s double-slit experiment, lights of green, yellow, and orange colors are successively used. Write the fringe widths for the three colors in increasing order.
A. βG < βY < βO
B. βO < βY < βG
C. βO < βG < βY
D. βY < βG < βO
Question 5
In Young’s double-slit experiment, the two parallel slits are made one millimeter apart and a screen is placed one meter away. What is the fringe separation when blue-green light of wavelength 500 nm is used?
A. 0.5 mm
B. 50 mm
C. 0.25 mm
D. 25 mm
Question 6
Two independent light sources act as coherent sources’.
A. True
B. False
Question 7
What happens to the interference pattern if the phase difference between the two sources varies continuously?
A. Brightens
B. No change
C. Disappears
D. Monochromatic pattern
Question 8
What will be the effect on the fringes formed in Young’s double-slit experiment if the apparatus is immersed in water?
A. Increases
B. Decreases
C. Remains the same
D. Independent
Question 9
What would be the resultant intensity at a point of constructive interference, if there are two identical coherent waves of intensity I’ producing an interference pattern?
A. 4 I’
B. 0
C. I’
D. 2 I’
Question 10
What would be the resultant intensity at a point of destructive interference, if there are two identical coherent waves of intensity I0 producing an interference pattern?
A. 5 I0
B. 2 I0
C. I0
D. zero