2025-05-062025-05-062024https://drive.google.com/file/d/1Ou-ps_5tKNEp84LwbQhjDkTQJhB-axZ_/view?usp=sharinghttp://ssm.ndl.gov.in/handle/123456789/1128(Waves and Optics)PHYSICS - HONOURS || DSCC-3DSCC-3Other