Which of the following changes would increase the separation between the bright fringes in the diffraction pattern formed by a diffraction grating?
A) Immerse the apparatus in water.
B) Increase the wavelength of the light used.
C) Increase the separation between the slits.
D) All of these.
E) None of these.
B
You might also like to view...
Kepler used Tycho's observations to show that the planets
a. followed perfectly circular orbits. b. followed perfectly cubical orbits. c. all circled the Earth. d. followed elliptical orbits.
A ball collides with a second ball at rest. After the collision, the first ball comes to rest and the second ball moves off at the speed of the first ball. In this collision
A. total momentum is not conserved. B. total kinetic energy is not conserved. C. total momentum is conserved but total kinetic energy is not conserved. D. total momentum is not conserved but total kinetic energy is conserved. E. total momentum and total kinetic energy are conserved and the masses are equal.
Water runs out of a horizontal drainpipe at the rate of 120. liters per minute. It falls 3.20 m to the ground. Assuming the water doesn't splash up, what average force does it exert on the ground?
A) 12.0 N B) 19.6 N C) 15.8 N D) 8.88 N E) 6.20 N
Sunspots
a. are cooler than their surroundings. b. are regions where material is rising from below the photosphere. c. are the result of convection. d. produce spicules. e. are generally found near the poles of the Sun during sunspot maximum.