This study aims to implement augmented reality videos in fundamental physics online tutorial activities to help students’ cognitive abilities on basic physics concepts. This study used a quasi-experimental method consisting of one experimental class and one control class. The research results show that the use of augmented reality technology in online tutorial activities can support students’ understanding of concepts. This can be seen from the average test results in the experimental class with a score of 8.6 being in the high category, and the average test results in the control class with a value of 7.1 being in the medium category. These results are also supported by student response data which states that using augmented reality videos can facilitate understanding concepts when studying independently. Thus, it can be concluded that implementing augmented reality videos in fundamental physics online tutorial activities can help students understand basic physics concepts

All thin ZnO films are synthesized by nebulizer on silicon substrates with growth periods of 10, 20, and 30 minutes. The characterizations are performed by ultraviolet-visible (UV-Vis) spectrophotometer, scanning probe microscopy, and X-ray diffraction (XRD), the thin ZnO films with various growth durations of 10, 20, and 30 minutes have been observed. The results show that all samples have polycrystalline hexagonal wurtzite and varying root mean square (RMS) roughness levels with the average island height of 86.931 nm, 70.046 nm, and 99.623 nm for the deposition time of 10, 20, and 30 minutes, respectively. The optical band gap energy of the thin ZnO films have predicted by extrapolating the linear plot of the Tauc equation. It confirms 3.25, 3.24, and 3.23 eV by increasing the growth times.