Physics - Study Mode

[#446] The laws which govern the motion of planets are called ________
Correct Answer

(B) Kepler's Laws

Explanation

Solution: Johannes Kepler was a 16th century astronomer who established three laws which govern the motion of planets around the sun. These are known as Kepler's laws of planetary motion.

[#447] Who gave the Theory of Relativity?
Correct Answer

(C) Albert Einstein

Explanation

Solution: In 1905, Albert Einstein determined that the laws of physics are the same for all non-accelerating observers, and that the speed of light in a vacuum was independent of the motion of all observers. This was the theory of special relativity.

[#448] What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space?
Correct Answer

(B) 11.2 km/sec

Explanation

Solution: The minimum velocity required for a rocket to overcome earth's gravity and travel into space is 11.2 km/sec.

[#449] Lightning heats the surrounding air to
Correct Answer

(C) 30000 deg Cent

Explanation

Solution: Lightning heats the surrounding air to 30000 deg Cent.

[#450] Which of the following is not an intrusive igneous body?
Correct Answer

(C) Stope

Explanation

Solution: Batholith is the biggest of the intrusive igneous rocks. Stope is not an intrusive igneous body. It is related to mining.