(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 ...

The Central Board of Secondary Education (CBSE) will conduct the Class 12 or Senior School Certificate exam from February 17 to April 10, 2026. The physics exam for Class 12 students is scheduled for ...

CBSE Class 12 Board Exam 2026 will begin on February 17. Check the physics question paper, marking scheme and other details. The Central Board of Secondary Education will conduct the Class 12 or ...