Physics Notes for UPSC CSE Prelims

UPSC CSE Prelims Physics Notes 1

Physics Notes for UPSC CSE Prelims  A seismograph ,  developed in 1890, is an instrument used to detect and record earthquakes. It comprises a mass a…

UPSC CSE Prelims 2026 Exam Date: 24 May 2026 (Sunday)
UPSC CSE Mains 2026 Exam Date: 21 Aug 2026 (Friday) - 5 Days