Electronic Theses and Dissertation

Miskonsepsi pada konsep-konsep fisika modern masih banyak ditemukan pada mahasiswa, terutama pada materi sinar-x, efek fotolistrik, efek compton, produksi pasangan, dan interaksi foton–gravitasi, karena pemahaman awal yang keliru namun diyakini benar sering kali tidak teridentifikasi melalui penilaian konvensional. penelitian ini bertujuan untuk mengembangkan dan mengimplementasikan instrumen diagnostik five-tier berbasis google form guna mengidentifikasi serta menelusuri sumber miskonsepsi mahasiswa pada konsep fisika modern. penelitian ini menggunakan metode research and development (r&d) dengan model addie yang meliputi tahap analisis, perancangan, pengembangan, implementasi, dan evaluasi. instrumen divalidasi oleh ahli materi dan ahli evaluasi serta diujicobakan kepada mahasiswa dan dosen pendidikan fisika. data dikumpulkan melalui lembar validasi, angket respons, angket kepraktisan, dan tes diagnostik five-tier, kemudian dianalisis secara deskriptif dan kuantitatif. hasil penelitian menunjukkan bahwa instrumen memiliki validitas isi yang sangat tinggi dan reliabilitas yang memadai untuk tujuan diagnostik, serta memperoleh respons sangat baik dan sangat praktis dari dosen dan mahasiswa. hasil implementasi mengungkap bahwa miskonsepsi mahasiswa paling dominan terjadi pada materi efek compton dan produksi pasangan, diikuti oleh efek fotolistrik, sinar-x, dan interaksi foton–gravitasi, sehingga instrumen diagnostik five-tier berbasis google form dinyatakan layak dan efektif sebagai asesmen diagnostik digital dalam pembelajaran fisika modern di perguruan tinggi. kata kunci: tes diagnostik five-tier, miskonsepsi, fisika modern

Misconceptions in Modern Physics concepts are still widely found among university students, particularly in topics such as X-rays, the photoelectric effect, the Compton effect, pair production, and photon–gravity interaction, as incorrect prior conceptions that are strongly believed are often difficult to identify through conventional assessments. This study aimed to develop and implement a Google Form–based Five-Tier diagnostic instrument to identify and trace the sources of students’ misconceptions in Modern Physics concepts. This research employed a Research and Development (R&D) method using the ADDIE model, which consists of analysis, design, development, implementation, and evaluation stages. The instrument was validated by subject-matter experts and evaluation experts and then tested on physics education students and lecturers. Data were collected through validation sheets, response questionnaires, practicality questionnaires, and Five-Tier diagnostic tests, and were analyzed descriptively and quantitatively. The results showed that the instrument achieved very high content validity and adequate reliability for diagnostic purposes, and received very good and highly practical responses from both lecturers and students. The implementation results revealed that students’ misconceptions were most dominant in the Compton effect and pair production topics, followed by the photoelectric effect, X-rays, and photon–gravity interaction, indicating that the Google Form–based Five-Tier diagnostic instrument is feasible and effective as a digital diagnostic assessment to support Modern Physics learning in higher education. Keywords: Five-Tier Diagnostic Test, Misconceptions, Modern Physic