(b) the minimum wavelength of X-rays produced by 30 kV electrons. 2. The photoelectric cut-off voltage in a certain experiment is 1.5 V. What is the maximum kinetic energy of photoelectrons emitted? 3 ...

CBSE Class 12 Physics sample paper for 2024-25 is available. Students can download the sample paper and marking scheme in PDF format. The sample paper includes general instructions, questions, and ...

The Central Board of Secondary Education (CBSE) conducted the Class 12 Physics Exam 2025 today, February 21, 2025. The exam took place in the morning, starting at 10:30 AM and concluding at 1:30 PM.