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Chapter 35: Q. 9 (page 1017)
A camera takes a properly exposed photo at and . What shutter speed should be used if the lens is changed to ?
The shutter speed is
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A narrow beam of white light is incident on a sheet of quartz. The beam disperses in the quartz, with red light traveling at an angle of with respect to the normal and violet light traveling at . The index of refraction of quartz for red light is . What is the index of refraction of quartz for violet light?
A reflection telescope is build with a diameter mirror having a focal length. it is used with a eyepiece. what are
(a) the magnification and
(b) the of the telescope?
A reflecting telescope is built with a -diameter mirror having anm focal length. It is used with aneyepiece.
What are:
(a) the magnification?
(b) the of the telescope?
A -tall object is from a screen. A diverging lens with focal lengthis in front of the object. What are the focal length and distance from the screen of a second lens that will produce a well-focused, -tall image on the screen?
The Hubble Space Telescope has a mirror diameter of 2.4 m. Suppose the telescope is used to photograph stars near the center of our galaxy, 30,000 light years away, using red light with a wavelength of 650 nm.
a. What鈥檚 the distance (in km) between two stars that are marginally resolved? The resolution of a reflecting telescope is calculated exactly the same as for a refracting telescope.
b. For comparison, what is this distance as a multiple of the distance of Jupiter from the sun?
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