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# chu (jc45999) - Geometrical Optics - erickson - (56780) This print-out should have 35 questions. Multiple-choice questions may continue on the next...

Please solve #33 of attached problems
chu (jc45999) – Geometrical Optics – erickson – (56780) 1 This print-out should have 35 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 10.0 points When light travels From air into glass: 1. both the speed and the Frequency de- crease 2. both the speed and the wavelength de- crease 3. both the speed and the Frequency in- crease 4. both the speed and the wavelength in- crease 5. both the wavelength and the Frequency are unchanged 002 10.0 points Red light with a wavelength oF 675 nm enters a medium with an index oF reFraction oF 1 . 2. Its wavelength in the medium is: 1. 810 nm 2. 562 nm 3. 739 nm 4. 616 nm 5. 675 nm 003 10.0 points Which oF the Following is true oF all virtual images? 1. none oF these 2. they are ephemeral 3. they are smaller than the objects 4. they are larger than the objects 5. they can be seen but not photographed 004 (part 1 of 2) 10.0 points Light is incident onto a pair oF slabs as shown in the fgure at an angle oF 30 . The angle with respect to the normal at which the light exits the second slab is 1. 30 2. 22 . 6 3. 71 . 8 4. 60 5. 18 . 2 005 (part 2 of 2) 10.0 points In the problem above, iF the frst slab is 1 cm in thickness and the second is 0.5 cm in thick- ness, how large is x indicated in the fgure? 1. 0.58 cm 2. 0.54 cm 3. 0.42 cm 4. 0.33 cm 5. 0.16 cm 006 10.0 points A ball is held 50 cm in Front oF a plane mirror. The distance between the ball and its image
chu (jc45999) – Geometrical Optics – erickson – (56780) 2 is: 1. 100 cm 2. 200 cm 3. 150 cm 4. zero 5. 50 cm 007 10.0 points When light passes from air to glass, it 1. bends away from the normal and speeds up 2. bends toward the normal without chang- ing speed 3. bends toward the normal and speeds up 4. bends away from the normal and slows down 5. bends toward the normal and slows down 008 10.0 points The index of refraction of a certain glass is 1.50. The sine of the critical angle for total internal reFection at a glass-air interface is: 1. 0.67 2. 1.00 3. 0.75 4. 1.50 5. 0.50 009 10.0 points A ray of light in water (index n 1 ) is incident on its surface (with air) at the critical angle. Some oil (index n 2 ) is now Foated on the water. The angle between the ray in the oil and the normal is: 1. sin 1 ( n 1 /n 2 ) 2. sin 1 (1 /n 2 ) 3. sin 1 (1 /n 1 ) 4. sin 1 (1 . 00) 5. sin 1 ( n 2 /n 1 ) 010 10.0 points The rectangular metal tank shown is ±lled with an unknown liquid. The observer, whose eye is level with the top of the tank, can just see corner E. The index of refraction of this liquid is: 1. 1.75 2. 1.50 3. 1.33 4. 1.25 5. 1.67 011 10.0 points A sphere placed in vacuum is used to focus parallel incident rays of light at its rear sur- face, as shown in the ±gure.
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