(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 is considered one of the most scoring yet conceptually demanding subjects in the board exams. The CBSE Class 12 Board Exams 2026 are scheduled to be held from 17 February 2026 to ...

The NCERT course aims to bridge learning gaps and provide affordable access to quality education. NCERT Free Online Physics Classes: The National Council of Educational Research and Training (NCERT) ...

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 ...

NCERT has launched free 24-week online courses for classes 11 and 12 on the SWAYAM platform, covering subjects from Economics and Mathematics to Biology and English. Designed by experienced faculty, ...