Question

Who built Jantar Mantar?
A.Sawai Jaisingh
B.Mirza Raja Jaisingh
C.Raja Mansingh
D.Pratap Singh

Answer 1

Hint:The Jantar Mantar is the first of the five observatories. It is a collection of twenty large instruments. They are mainly used to calculate the position and movement of celestial bodies that can see with the naked eye. During the 1982 Asian Games held in New Delhi, the Jantar Mantar was used as a logo of the event.

Complete answer:
The Jantar Mantar is a form of architecture built in 1724 by Maharaja Jai Singh II. He is the king of Jaipur. It was located in the heart of Delhi. It is considered a heritage astronomical observatory. He mainly formed five observatories during the early eighteenth century. The first one is situated in Delhi, that is Jantar Mantar, others are located in Jaipur, Varanasi, Ujjain, and Mathura. The term Jantar Mantar is derived from two words such as Jantra or yantra and mantra. The word Jantra means instrument and the word mantra means to calculate. So the meaning of the word Jantar Mantar is a calculation instrument.
The main objectives of the observatory are to assemble astronomical tables, predict the movement of the planet, moon, and sun. It is considered a huge observatory. It includes several astronomical structures and instruments. The instruments are mainly constructed with bricks, limestone, rubble, and plastered. One of the important and unique features of Jantar Mantar is it is an outdoor observatory. That means all the instruments in there are installed open rather than enclosed in a building or room. This is the most significant, inclusive, and the best preserved of India's historic observatories. It is an example of the astronomical skills and astral concepts of the court of an intellectual prince at the end of the Mughal period. The observatory consists of nineteen instruments. They are used to measuri

Hence, the correct answer is option (A).

Note:Throughout the country now many modern observatories are developed .But the importance, significance, and heritage of observatories are not diminished today. The fact is that the Jantar Mantar remains one of the top places and it is mainly focused on the students, science enthusiasts, and buffs.