LHS Take Test Lab 3 (Lensex C Chegg stucy Guided 5 x NM Inbox (3) - frankatoo x

Question

LHS Take Test Lab 3 (Lensex C Chegg stucy Guided 5 x NM Inbox (3) - frankatoo x G Cmail 8 – ca Lawrence lechnological University JUST | https//myltu.edu/webapps/ assessment take launch jspicourse assessment id= 10487 1course id= 135 1content id=22292 18step-ull at Question Corpiston Status QUESTION 1 2 points Save Answer In lab, an inverted image is observed. When the image height is used it in calculation, what sign should it be? O Positive O Negative Either can be used . QUESTION 2 2 points Save Answer An object sits 21.79 cm away from a a lens of a 128 cm focal length. What is the observed image magnification? QUESTION 3 2 points Save Answer which ray diagram below correcty shows immage formation for the situations shown above? 8 a €9 W D fad ENG 9/25/2013 in

Explanation / Answer

1) For an inverted image,height is negative.

2)object distance=u=21.79cm

focal length =f=12.8cm(positive focal length means convex lens)

Let image distnace be v

1/v+1/u=1/f

1/v = 1/f-1/u = (1/12.8)-(1/21.79)

v = 31.02cm

Magnification = -v/u = -31.02/-21.79=1.42

3)Option B is correct

4)Virtual,smaller .

5)False. focal length does not depend on object distance

6)positive

7)Flase. Converging lens has positive focal length

8)Magnification = 19.5/13.4=1.46

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