Question

use the following observation table slowing variation of image distance (V) with object distance
case of a convex lens and answer the questions that follows:
S.No.
Object distance, u (cm) Image distance v (cm)
-90
-18
- 60
-20
+30
-30
-20
-60
-90
-18
-10
-100
(a) What is the focal length of the convex lens ? Give reason in support of your answer.
(b) Write the serial number of that observations which is not correct. How did you arrive at this conclusion
() Take an appropriate scale to draw ray diagram for the observation at S.No 4 and find the approxima
value of imagnification
P​

Answer 1

Answer:

don't know soooooooooo sorry