Question Detail

PHY 104 Diffraction and Interference of light waves Objective Question

Question

What is a common method for creating a diffraction grating, as described in the text?
Options
A By painting black lines on a transparent sheet.
B By shining a laser through a photographic film.
C By ruling several parallel grooves on a glass plate with a diamond point.
Correct Answer
D By arranging a series of thin wires very closely together.
Correct Answer

Option C is the correct answer.

Detailed Explanation

The text explains, 'Gratings are made by ruling several parallel grooves on a glass plate with a diamond point.'

Hint

Look for the description of how gratings are 'made' on page 5.

Question Info