A convex lens of focal length 
forms an image of an extended source of light on a photoelectric cell. A current 
is produced. The lens is replaced by another convex lens having the same diameter but focal length 
. The photoelectric current now is :
A
B
4 I
C
2 I
D
I
Text Solution
Verified by ExpertsThe correct answer is:
D
As amount of energy incident on cell is same so current will remain same.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
If the refractive index of the material of a prism is , where is the angle of prism then the angl…
A convex mirror of radius of curvature forms an image that is half the size of the object. The obj…
A biconvex lens of refractive index 1.5 has a focal length of in air. Its focal length when immers…
If the distance between object and its two times magnified virtual image produced by a curved mirro…
The refractive index of a prism with apex angle is . The angle of minimum deviation is
The distance between object and its 3 times magnified virtual image as produced by a convex lens is…