Q42. Young's double slit experiment is performed using a source of white light.
A. The center fringe

Q: What is the correct answer for CUET UG Physics Q42?

The correct answer is B. A. The central fringe (path difference = 0) is constructive for all wavelengths, so it appears white. (Correct)B. For the first order bright fringe, y = λD/d. Violet light has the shortest wavelength, so its first bright fringe (y_violet) will be closest to the central fringe. (Correct)C. Red light has the longest wavelength, so its first bright fringe (y_red) will be farthest from the central fri

Q: Q42. Young's double slit experiment is performed using a source of white light. A. The center fringe will be white. B. The fringe next to the center fringe will be violet. C. The fringe next to the…

The correct answer is B. A. The central fringe (path difference = 0) is constructive for all wavelengths, so it appears white. (Correct)B. For the first order bright fringe, y = λD/d. Violet light has the shortest wavelength, so its first bright fringe (y_violet) will be closest to the central fringe. (Correct)C. Red light has the longest wavelength, so its first bright fringe (y_red) will be farthest from the central fri

Q: What are the options for this CUET UG Physics question?

A. C, D, E only · B. A, B, D only · C. A, C and D only · D. B, C, D only

Question

Q42. Young's double slit experiment is performed using a source of white light.
A. The center fringe will be white.
B. The fringe next to the center fringe will be violet.
C. The fringe next to the center fringe will be red.
D. There will be no completely dark fringe,
E. The center fringe will be of no colour.

Choose the correct answer from the options given below:

FirstInTest · Accepted Answer

A. The central fringe (path difference = 0) is constructive for all wavelengths, so it appears white. (Correct)B. For the first order bright fringe, y = λD/d. Violet light has the shortest wavelength, so its first bright fringe (y_violet) will be closest to the central fringe. (Correct)C. Red light has the longest wavelength, so its first bright fringe (y_red) will be farthest from the central fringe, compared to other colors. (Incorrect, as per B)D. Since white light consists of multiple wavelengths, a point that is dark for one wavelength might be bright for another. Therefore, no completely dark fringes are formed. (Correct)E. The central fringe is white, which is a combination of all colors, hence it has a color. (Incorrect)Therefore, A, B, and D are correct statements.

Answer

C, D, E only

Answer

A, B, D only

Answer

A, C and D only

Answer

B, C, D only

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