A student sets up a double-slit experiment to determine the slit separation of a slide. They use a green laser of wavelength 532 nm532\text{ nm}532 nm and place the screen at a distance of 1.80 m from the slits. Using a traveling microscope, they measure the distance from the centre of the 2nd bright fringe to the centre of the 10th bright fringe on the same side of the central maximum to be 1.52 cm.
What is the slit separation?
4.41×10−4 m4.41 \times 10^{-4}\text{ m}4.41×10−4 m
5.04×10−4 m5.04 \times 10^{-4}\text{ m}5.04×10−4 m
5.67×10−4 m5.67 \times 10^{-4}\text{ m}5.67×10−4 m
6.30×10−4 m6.30 \times 10^{-4}\text{ m}6.30×10−4 m
37 exam-style questions on AQA A Level Physics Refraction, diffraction and interference, covering Interference, Diffraction, and Refraction at a plane surface. Each one has a worked solution and a mark scheme showing where the marks go.