A student has to determine the focal length of a convex lens by obtaining the image of a distant object on a screen.Which of the following measures should he take to obtain better results?
a. Select a lens of smaller diameter( say 3cm)
b. Select a lens of larger diameter (say 5cm)
c. Select an object very far from the lens
d. Select an object far,but not very far,from the lens
e. Keep all the lights of the room on.
f. Keep minimum lights of the room on.
(A) a,c and e
(B)b,d and f
(C)a,d and f
(D)b,d and e
Answers
Answered by
1
D may be correct Option
Answered by
1
Answer:
(B)b,d and f
Explanation:
Similar questions