According to Kepler’s First law (Law of Orbits), each planet revolves around the sun in an elliptic orbit, the sun occupying one of the Foci. The elliptical shape of the orbit is a result of the inverse square force of gravity. Kepler’s laws were derived for orbits around the sun, but they apply to satellite orbits as well.

Correct Option: A

According to Kepler’s First law (Law of Orbits), each planet revolves around the sun in an elliptic orbit, the sun occupying one of the Foci. The elliptical shape of the orbit is a result of the inverse square force of gravity. Kepler’s laws were derived for orbits around the sun, but they apply to satellite orbits as well.

India is the first Asian nation to reach Mars orbit, and the first nation in the world to do so in its first attempt. Its Mars Orbiter Mission (MOM), also called Mangalyaan, was launched on 5 November 2013 by the Indian Space Research Organisation (ISRO). It has been orbiting Mars since 24 September 2014.

Correct Option: D

India is the first Asian nation to reach Mars orbit, and the first nation in the world to do so in its first attempt. Its Mars Orbiter Mission (MOM), also called Mangalyaan, was launched on 5 November 2013 by the Indian Space Research Organisation (ISRO). It has been orbiting Mars since 24 September 2014.

The equator receives equal day and night throughout the year because it does not tilt in relation to the sun’s location. Because of the tilted axis of the Earth, the poles and locations away from the equator lean towards or away from the sun as an orbit is completed, while the equator stays in essentially the same location relative to the sun.

Correct Option: D

The equator receives equal day and night throughout the year because it does not tilt in relation to the sun’s location. Because of the tilted axis of the Earth, the poles and locations away from the equator lean towards or away from the sun as an orbit is completed, while the equator stays in essentially the same location relative to the sun.

An eclipse occurs when a star (such as Sun) aligns with two celestial bodies, such as a planet and a moon. The closer body casts a shadow that intersects the more distant body. This means that “things get dark.” The region of shadow is divided into an umbra, where the light from the star is completely blocked, and a penumbra, where only a portion of the light is blocked. Beyond the end of the umbra is a region called the antumbra. For an observer inside the antumbra of a solar eclipse, for example, the moon appears smaller than the sun, resulting in an annular eclipse.

Correct Option: D

An eclipse occurs when a star (such as Sun) aligns with two celestial bodies, such as a planet and a moon. The closer body casts a shadow that intersects the more distant body. This means that “things get dark.” The region of shadow is divided into an umbra, where the light from the star is completely blocked, and a penumbra, where only a portion of the light is blocked. Beyond the end of the umbra is a region called the antumbra. For an observer inside the antumbra of a solar eclipse, for example, the moon appears smaller than the sun, resulting in an annular eclipse.

There are 8 planets of the solar system that revolve around the sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto was stripped of its planetary status and categorized as a ‘dwarf planet’ by the International Astronomical Union in 2005.

Correct Option: B

There are 8 planets of the solar system that revolve around the sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto was stripped of its planetary status and categorized as a ‘dwarf planet’ by the International Astronomical Union in 2005.