A sharp image of a distant object is obtained on a screen using a convex lens. In order to determine the focal length of the lens; we need to measure the distance between the
A. object and the lens
B. object and its image (screen)
C. lens and the image (screen)
D. lens and the screen and also object and the screen
Answer:C
A sharp image of a distant object is obtained on a screen using a convex lens. In order to determine the focal length of the lens; we need to measure the distance between the
A. object and the lens B. object and its image (screen) C. lens and the image (screen) D. lens and the screen and also object and the screen
Explanation: f= Distance between the image obtained and the reflector / mirror/ lens.