Of the various types of electromagnetic radiation, the shortest wavelengths are the most penetrating through all forms of matter. Which of the following is it?
a. ultraviolet
c. infrared
b. gamma
d. visible light
B
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Which of the following statements about novae is true?
A) A star system that undergoes a nova may have another nova sometime in the future. B) A nova involves fusion taking place on the surface of a neutron star. C) A nova is the most powerful type of explosion ever seen in the universe. D) When a star system undergoes a nova, it brightens as much as a star system undergoing a supernova. E) A nova can occur on a single, isolated star.
Suppose that you are looking at the sky at about midnight on the winter solstice. Which star will be nearest to your meridian?
A) Alpha Centauri B) Sirius C) Spica D) Deneb
A 3.0-cm tall statue is 48 cm in front of a convex lens having a focal length of magnitude 20 cm
(a) Is the image of the statue real or virtual? (b) How far is the image from the lens? (c) Is the image upright or inverted? (d) How tall is the image?
Two thin slits are 6.00 ?m apart. Monochromatic coherent light falls on these slits, and produces a fifth-order bright interference fringe at an angle of 32.3° away from the centerline
What is the wavelength of the light? A) 416 nm B) 641 nm C) 164 nm D) 614 nm