Question: (a) What do you mean by static cosmological model? Describe the difference between Einstein and De-Sitter universe. (b) Discuss the cosmological Red-Shift in FLRW

(a) What do you mean by static cosmological model? Describe the difference

between Einstein and De-Sitter universe. (b) Discuss the cosmological Red-Shift in FLRW

(a) What do you mean by static cosmological model? Describe the difference between Einstein and De-Sitter universe. (b) Discuss the cosmological Red-Shift in FLRW universe with metric given by- dr ds = dt - R(t) + r de + r sin 0 do] L1-Kr2 (c) Explain the reasons why a star possess gravitational collapse ? (d) Discuss the big-bang theory for the origin of universe.

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