Question

how long did he work at Calcutta University of C.V Raman​

Answer 1

Answer:

10 years

For 10 years Raman worked as a civil servant in the Indian Finance Department in Calcutta (now Kolkata), rising quickly to a senior position. In his free time he carried out research into the physics of stringed instruments and drums.

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Answer 2

Answer:

for 10 years in culcutta university