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11
Which of the planets is nearest to the earth?
Discuss
Answer & Solution
Answer: Option B
Solution:
When Venus is in the middle of the Sun and Earth, it is at its closest point to Earth. During this period, Venus would be the closest planet to Earth. However, there are times when Mars is actually the closest planet.
12
Which of the following is the brightest planet?
Discuss
Answer & Solution
Answer: Option B
Solution:
Venus, which can be seen with the unaided eye from Earth, is the brightest planet in our Solar System. Venus was given the nickname evening star and morning star because of its bright, consistent presence.
13
Which planet is known as 'Morning Star'?
Discuss
Answer & Solution
Answer: Option B
Solution:
Venus because it seems In addition to being known as the evening star, Venus was also called the morning star because it could be seen for a few hours before the Sun grew too bright. The planet actually becomes brightest before the Sun rises or just after sunset.
14
Parsec is the unit of measurement of ________
Discuss
Answer & Solution
Answer: Option B
Solution:
Basically, it's a unit of length used to measure the astronomically large distances between objects beyond our Solar System. One parsec is the distance at which one astronomical unit subtends an angle of one arcsecond.
15
Which of the following planets is known as Earth's twin?
Discuss
Answer & Solution
Answer: Option D
Solution:
Venus is sometimes called Earth's twin because Venus and Earth are almost the same size, have about the same mass (they weigh about the same), and have a very similar composition (are made of the same material).
16
Rotational axis of which of the following planet is highly tilted?
Discuss
Answer & Solution
Answer: Option B
Solution:
Uranus is a real oddball in our solar system. Its spin axis is tilted by a whopping 98°, meaning it essentially spins on its side. No other planet has anywhere near such a tilt.
17
Which of the following is not related to solar system?
Discuss
Answer & Solution
Answer: Option D
Solution:
Nebula is the dense cloud of gases mainly Helium & Hydrogen & dust. They occur at primary stages & then from them galaxies are formed. It is a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter.
18
Comets revolve around ________
Discuss
Answer & Solution
Answer: Option A
Solution:
Comets go around the Sun in a highly elliptical orbit. They can spend hundreds and thousands of years out in the depths of the solar system before they return to Sun at their perihelion. Like all orbiting bodies, comets follow Kepler's Laws - the closer they are to the Sun, the faster they move.
19
Which one of the following planets takes the same number of days for rotation and revolution?
Discuss
Answer & Solution
Answer: Option B
Solution:
Venus is the planet that takes nearly the same number of days for rotation as it does for revolution around the Sun. This phenomenon is known as synchronous rotation or tidal locking. As a result, Venus rotates on its axis very slowly and in the opposite direction compared to most other planets. It takes about 243 Earth days for Venus to complete one rotation on its axis, and it also takes about 225 Earth days to complete one orbit around the Sun. This means that a day (rotation) on Venus is longer than its year (revolution). Therefore, the correct answer is Option B, which is Venus.
20
The Planets that have no natural satellites are ________.
Discuss
Answer & Solution
Answer: Option A
Solution:
Mercury and Venus are the only planets with no natural satellites.