| dc.description.abstract | A descriptive dtudy has conducted to see the profile of preservice physis teachers consept mastery on optics. population on this study are physics education students on a LPTK in East Kalimantan. Data were collcted using a test selected response method from of multiple choices. The results showed that student's mastery was quite low, indicated by proportion of student who masters each sub topic as follows : 40.6% for geometric optics, 10,5% for optical instrument, 21.0% for interference, 13,8% for diffraction, 39,5% for electromanetic waves, and 21.1% for particle nature of electromagnetic waves. | |
