elvstvo
Tamo sumus!
Malyse the following observation table showing variation of image distance (v) with object distance
in case of a convex lens and answer the questions that follow, without doing any calculation : 5
S. Object distance Image distance
No.
u (cm)
v (cm)
- 90
+18
- 60
+ 20
- 30
+ 30
+ 60
- 18
6
- 10
+ 100
+ 90
(a) What is the focal length of the convex lens? Give reason in support of your answer.
(b) Write the serial number of that observation which is not correct. How did you arrive at this
conclusion?
(c) Take an appropriate scale to draw ray diagram for the observation at S. No. 4 and find the
approximate value of magnification.
Answers
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0
Answer:
l12 is two square is equal to one smart
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