Magnifying Glass With the Image at Infinity: The focal length of a converging lens is 10 cm. What is the angular magnification of this lens if the image is viewed by a relaxed eye with a near point of 25 cm?
A. 0.50
B. 1.5
C. 2.5
D. 3.5
E. 4.5
Answer: C
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A Young's double-slit apparatus is set up so that a screen is positioned 1.6 m from the double slits, and the spacing between the two slits is 0.0315 mm. What is the distance between alternating bright fringes on the screen if the light source has a wavelength of 630 nm? (1 nm = 10-9 m)
a. 0.016 m c. 0.025 m b. 0.047 m d. 0.032 m
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Indicate whether the statement is true or false
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What will be an ideal response?
Two balls are thrown from the top of a building. One is thrown up and the other is thrown down, both with the same initial speed. What are their speeds when they hit the street?
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