For finding the focal length of a convex lens by obtaining the image of a distant object, one should use as the object
A. a well lit distant tree
B. window grill in the class room
C. any distant tree
D. a lighted candle kept at the other end of the table
Answer:A
For finding the focal length of a convex lens by obtaining the image of a distant object, one should use as the object
A. a well lit distant tree B. window grill in the class room C. any distant tree D. a lighted candle kept at the other end of the table
Explanation: The light and distance of the object is important consideration for correct focal length.