Physical World ...

Which of the following does not comes under microscopic forces?

Oersted and Faraday unified which of the following achievements?

Which of the following forces have the infinite range?

Heliocentric theory was proposed by ................

Name the Indian scientist who has contributed in the  discovery of inelastic scattering of light by molecules.

Rishi chakra was a famous ancient scholar in the field of ?

Stars appears to move from east to west because

Which of the following scientific phenomenon is involved in the generation of Hydroelectric power?

The Giant Metrewave Radio Telescope (GMRT) is related to _________________.

Raghu learnt something in school and he told his friends "An object can appear smaller or bigger in size depending on its distance from you. So, an elephant can look as small as a cat if it is far away."
Based on this, his friends said the following:
Kabir: "All stars are of the same size."
Raina: "All other stars are definitely smaller than the Sun."
Karen: "The Sun and the Moon are definitely of the same size.
"Shifa: "There could be a star which is bigger than the Moon."
Who is correct?