1 light year is equal to MCQ with Answer and Explanation

Explanation:
Convex mirror gives wider field of view, always forms virtual, erect, diminished image. Allows driver to see larger area. Concave can magnify but field narrow. Plane gives normal view but limited field.

Explanation:
The Sun and other stars generate their immense energy through nuclear fusion. In the Sun's core, immense gravitational pressure and heat cause hydrogen nuclei (protons) to overcome electrostatic repulsion and fuse together to form helium nuclei. This fusion process releases vast amounts of energy according to Einstein's E=mc².

Explanation:
Convex mirror diverges rays, gives erect, diminished, virtual image with wider field. Concave would magnify but narrow field. Plane gives normal view. Safety advantage.