(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 ...

CBSE Class 12 Physics exam will be held on Friday, February 21, 2025. The CBSE 12th Physics paper will begin at 10.30 am on February 21, and conclude at 1.30 pm. This year, over 17.88 lakh students ...