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Solar eclipse is a fundamental astronomical phenomenon. Option A is wrong. When Earth comes between Sun and Moon it causes a LUNAR eclipse (Chandra Grahan) not a solar eclipse. The Earth's shadow falls on the Moon causing lunar eclipse during full moon night. Option B is CORRECT. The image states: सूर्य ग्रहण (Solar Eclipse) की घटना होती है — जब सूर्य तथा पृथ्वी के बीच चन्द्रमा आ जाता है. Solar eclipse occurs on a new moon day (Amavasya) when the Moon comes between the Sun and Earth in a straight line. The Moon blocks sunlight from reaching Earth causing a shadow on Earth's surface. Types of solar eclipse: Total solar eclipse (Moon completely covers Sun — seen from umbra region). Partial solar eclipse (Moon partially covers Sun — seen from penumbra). Annular solar eclipse (Moon at apogee appears smaller than Sun leaving a ring of fire). Option C is wrong. The Sun cannot physically come between Earth and Moon since the Sun is much farther away than the Moon and the Sun-Moon-Earth alignment would have the Sun beyond both. Option D is wrong. Earth moving away from Sun is orbital motion not related to solar eclipse occurrence.
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Optics is the branch of physics that studies the behavior of light, including its reflection, refraction, and interaction with lenses and mirrors.
Reflection is the bouncing back of light when it strikes a surface, while refraction is the bending of light as it passes from one medium to another with a different optical density.
A lens is a transparent optical device with curved surfaces that refracts light to converge or diverge rays, commonly classified as convex (converging) or concave (diverging).
The speed of light in a vacuum is approximately 3 x 10^8 meters per second, denoted by the symbol c.
Total internal reflection occurs when light traveling from a denser medium to a rarer medium strikes the boundary at an angle greater than the critical angle, causing it to be completely reflected back into the denser medium.
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