[Solved] Observatories of Maharaja Jai Singh II: Jantar Mantar Locations

Where were the observatories constructed by Maharaja Jai Singh-II?
1. Delhi
2. Jaipur
3. Ujjain
4. Varanasi
Select the correct answer from the codes given below:

[U.P. P.C.S. (Mains) 2007]

Detailed Solution & Historical Context

Concept

The Jantar Mantars represent the peak of pre-telescopic astronomical architecture in India, combining mathematical precision with monumental scale.

Authentic Source Evidence

Maharaja Sawai Jai Singh II of Jaipur constructed five astronomical observatories in the early 18th century. These are located in Delhi, Jaipur, Ujjain, Varanasi, and Mathura. These sites were equipped with massive masonry instruments like the Samrat Yantra for measuring time and solar positions.

Analytical Breakdown

Logic 1: Jai Singh II sought to improve existing astronomical tables, leading to the creation of 'instruments for measuring the harmony of the heavens'.

Logic 2: While Jaipur's Jantar Mantar is the largest and best-preserved, Delhi's was the first to be constructed.

Conceptual Deep Dive & Logic

"What was the primary purpose of the Jantar Mantar structures?"

To compile accurate astronomical tables (Zij) and predict the movements of celestial bodies without using small metal instruments.

Examiner's Mindset & Pro-Tip

"Jai Singh’s choice of massive masonry over small metal instruments was a deliberate effort to achieve higher accuracy by avoiding the structural instability of large metal parts."

Topic Clusters (click to see related topic questions)

Samrat Yantra 2

Where were the observatories constructed by Maharaja Jai Singh-II?1. Delhi2. Jaipur3. Ujjain4. VaranasiSelect the correct answer from the codes given below: