bsc-3-year-physics-solid-state-physics-and-devices-os-272-s-2021.pdf MCBU UNIVERSITY Question Paper and solutions, Maharaja Chhatrasal Bundelkhand University, Chhatarpur, Madhya Pradesh,महाराजा छत्रसाल बुंदेलखंड विश्वविद्यालय, छतरपुर, मध्य प्रदेश