XERCISES. Your method of solution is as important as your answer. Show all your
ID: 1786021 • Letter: X
Question
XERCISES. Your method of solution is as important as your answer. Show all your Note: n # 10-9, = 10-6, m-10-3, e-|.60 x 10-19 C, and k 8.99 x 109 N-rm2/C2 . When a diverging lens is held 11.0 cm above a line of print, the image is 6.00 cm beneath the lens. work on these pages. Circle your answers 17 each. (a) Is the image real or virtual? ViVtu (b) What is the focal length of the lens? 0 At most, how many bright fringes can be formed on either side of the central bright fringe when light of wavelength 550 nm falls on a double slit whose slit separation is 1.14 x 10* m?Explanation / Answer
a)
Virtual image
diverging lens gives virtual image only
b)
do = object distance = 11 cm
di = image distancxe = - 6 cm
f = focal length
using the equation
1/f = 1/di + 1/do
1/f = 1/(-6) + 1/11
f = - 13.2 cm
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