In which Indian city was the country's first fulldome 3D digital theatre inaugurated at a major science and planetarium complex?

Introduction / Context:
Science museums and planetariums across India have been upgrading their facilities with modern projection technologies to make astronomy and science more engaging for the public. One notable development was the inauguration of the country's first fulldome 3D digital theatre, which allows immersive spherical projections on a dome. This question asks you to identify the Indian city where this pioneering fulldome 3D digital theatre was established at a major science and planetarium complex.

Given Data / Assumptions:

The focus is on the first fulldome 3D digital theatre in India.
It is associated with a major science city or planetarium type complex.
Options include Hyderabad, Kolkata, Visakhapatnam and Pune, all large cities with educational institutions.
We assume awareness of news regarding science and technology infrastructure in India.

Concept / Approach:
The key to answering this question is recalling that Science City in Kolkata is one of the largest science centres in India and has been at the forefront of adopting modern exhibition and projection technologies. The first fulldome 3D digital theatre was inaugurated there to enhance the planetarium style experience for visitors. Although other cities like Hyderabad, Visakhapatnam and Pune also have planetariums and science museums, the specific first fulldome 3D facility highlighted in general knowledge questions is associated with Kolkata.

Step-by-Step Solution:

Verification / Alternative check:
You can verify this by recalling that many competitive exam magazines and science news sections reported that Science City in Kolkata introduced India's first fulldome 3D digital theatre, describing it as a major upgrade to the planetarium experience. Promotional materials highlight Kolkata as a hub for this new technology. No similar first time claim is attached to Hyderabad, Visakhapatnam or Pune in standard exam oriented resources, which supports choosing Kolkata as the correct option.

Why Other Options Are Wrong:

Common Pitfalls:
Some students may guess based on the presence of technology industries, leading them to choose Hyderabad or Pune simply because those cities are associated with IT and education. Others may not distinguish between ordinary planetariums and a modern fulldome 3D digital theatre. To avoid such mistakes, pay attention to superlatives like first or largest in general knowledge news and remember which city is explicitly linked to those achievements. In this case, Kolkata with its Science City complex is the correct association.

Final Answer:
The correct answer is Kolkata, because India's first fulldome 3D digital theatre was inaugurated at the Science City complex in this city.