Universe - Study Mode
[#46] The period of one revolution of sun around the centre of galaxy is called ________
Correct Answer
(C) Cosmic year
Explanation
Solution: The galactic year, also known as a cosmic year, is the duration of time required for the Sun to orbit once around the center of the Milky Way Galaxy. Estimates of the length of one orbit range from 225 to 250 million terrestrial years.
[#47] Which is the hottest planet in the solar system?
Correct Answer
(C) Venus
Explanation
Solution: Venus is the hottest planet in the solar system. Although Venus is not the planet closest to the sun, its dense atmosphere traps heat in a runaway version of the greenhouse effect that warms Earth. As a result, temperatures on Venus reach 870° Fahrenheit (465° Celsius), more than hot enough to melt lead.
[#48] Which is the brightest planet of the solar system?
Correct Answer
(D) Venus
Explanation
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.
[#49] The planet that is nearly comparable to Earth as regards its size and mass is
Correct Answer
(C) Venus
Explanation
Solution: Venus is often called the Earth's sister planet. The Earth and Venus are very similar in size with only a 638 km difference in diameter, Venus having 81.5% of the Earth's mass.
[#50] Among the following which planet takes maximum time for one revolution around the Sun?
Correct Answer
(B) Jupiter
Explanation
Solution: Jupiter revolves or orbits around the Sun once every 11.86 Earth years, or once every 4,330.6 Earth days.