Question

Converging lenses A and B have the same focal length, but B is only half the aperture of A. Both lenses are used to form images of distant objects on a screen. Which of the following statements is correct?
A) For both lenses, the distance from the lens to the screen is same.
B) For both lenses, the images are of the same brightness.
C) For both lenses, the images are of the same size as the object.
D) Lens B gives a image than A.
Also please explain​

Answer 1

lense A will give more clear image than lense B

since aperture is more so it will capture more light then B and produce sharper and clear image

option B is answer

Answer 2

The correct answer is C) For both lenses, the images are of the same size as the object.

• All lenses form the image of a distant object in their focus, as the focal length of the two lenses is the same, hence there will be same size image shape, and the same magnification.
• Since the diameter of the lens A is greater than the diameter of the lens B, this indicates that the aperture of the lens A is larger than that of the lens B,
• This means that more light energy can penetrate the lens A, rendering the image sharper than the lens B.