17:16

lecture 21|Ray optics| 12th | IIT NEET| Er. Santosh Kumar|boards

31:13

lecture 23| Ray optics|dispersive power||board|12th| IIT- NEET|Er.santosh Kumar @magnetacademy413

17:44

lecture 19| Ray optics Apparent & real depth| boards|12th|IIT NEET|Er. Santosh Kumar

16:16

lecture 28|Ray optics|boards 12th|IIT NEET| Er Santosh Kumar

25:30

lecture 07| Ray optics ||12th |IIT-NEET |boards |Er.santosh kumar @magnetacademy413

34:08

lecture 25| Ray optics|board 12th| IIT NEET|Er. Santosh Kumar @magnetacademy413

15:48

lecture 22|Ray optics|IIT NEET|board 12th|Er. Santosh Kumar @magnetacademy413

30:42

lecture 15| Ray optics |12th |IIT-NEET |Er.santosh kumar |board @magnetacademy413