No, the speed of light and the distance between Earth and the Sun are not mentioned in the Hanuman Chalisa. The Hanuman Chalisa is a devotional hymn dedicated to Lord Hanuman, composed by the poet-saint Tulsidas in the 16th century. It consists of 40 verses (chalisa), praising and glorifying Lord Hanuman.
Tulsidas lived during a time when scientific knowledge and instruments were not as advanced as they are today. The concepts of the speed of light and the precise distance between the Earth and the Sun were not known during his era. The accurate determination of the speed of light and the measurement of astronomical distances required sophisticated instruments and advanced scientific methods, which were developed much later in history.
It's important to note that ancient religious or spiritual texts like the Hanuman Chalisa primarily focus on matters of faith, devotion, and moral teachings rather than scientific or technological information. They serve as expressions of devotion and spiritual contemplation, conveying philosophical and religious concepts in a poetic and metaphorical manner.
Therefore, it would be incorrect to claim that Tulsidas calculated the speed of light or had specific scientific knowledge regarding the distance between the Earth and the Sun. The Hanuman Chalisa, like other religious texts, is primarily a work of devotion and spiritual inspiration, and it should not be interpreted as a scientific or technical treatise.