NAEST 2020: Image of the Sun by a Convex Lens br Sun rays ar

Question: NAEST 2020: Image of the Sun by a Convex Lens
Sun rays are falling on two convex lenses and are focused on a screen. The best images are not point-like but are disk-like. Two possible suggestions for this observation are
A- The rays from the Sun are not parallel
B- Because of spherical aberrations, parallel rays going through a convex lens do not meet at a point.
The observed spreading of the image in the experiment is

1. Due to A but not due to B.
2. Due to B but not due to A.
3. Due to both A and B.
4. Neither due to A nor due to B.

Question 2: Choose the correct option(s).

1. Bigger lens gives image of a bigger portion of the Sun and the smaller lens gives image of a smaller portion of the Sun.
2. Both lenses give image of the full Sun.
3. As compared to the smaller lens the bigger lens gives more intense image of the Sun
4. Spherical aberration is more in the case of the image by the bigger lens.

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