Double slit and Diffraction grating
Quiz by Wong Ho Yin Howard
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- Q 1/4Score 0The figure shows some of the bright fringes formed when monochromatic light passes through a diffraction grating. Which of the following is/are correct? (1) theta 1 = theta 2. (2) The maximum order of bright fringe is 4 if theta 1 = 20 degree. (3) Theta 1 will decrease if the experiment is performed in water but not in air.29(1) only(2) and (3) only(1) and (2) only(3) only
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- Q1The figure shows some of the bright fringes formed when monochromatic light passes through a diffraction grating. Which of the following is/are correct? (1) theta 1 = theta 2. (2) The maximum order of bright fringe is 4 if theta 1 = 20 degree. (3) Theta 1 will decrease if the experiment is performed in water but not in air.(1) only(2) and (3) only(1) and (2) only(3) only60s
- Q2Which diagrams below correctly show the spectra formed from white light by a glass prism and a diffraction grating respectively? It is known that red light travels faster than violet light in glass. (R = red, V = violet, W = white)(2) and (4) only(1) and (4) only(2) and (3) only(1) and (3) only60s
- Q3When monochromatic light passes through a diffraction grating, a pattern of bright fringes is formed. Which arrangement would produce the greatest angle theta between the central and the first-order bright fringes?200 lines per mm and blue light400 lines per mm and blue light200 lines per mm and green light400 lines per mm and green light60s
- Q4For a diffraction grating of 600 lines per mm, the diffracted red light (657 nm) coincides with the diffracted violet light (438 nm) at angle of diffraction 52 degree. What rae the respective orders of the diffracted red light and violet light?red: 3, violet: 2red: 2, violet: 3red: 3, violet: 4red: 4, violet:360s
