Q.6 to Q.10 Physics - Class -12 by Vinod Sir | Board Examination | 2026

‪@PhysicsPulse01‬ has solved Class 12 Physics Board Examination questions from a sample paper, specifically questions 6 to 10 (0:00-0:15).

The video covers the following topics:

Diffraction by a single slit (0:22-3:27): The speaker explains how increasing the width of a single slit affects the intensity versus distance graph in a diffraction pattern, relating intensity to the square of the slit's width.
Interference (3:27-4:02): The phenomenon of superposition of two waves resulting in energy redistribution is defined as interference.
Emission of Radiation and Wavelength (4:02-10:01): This section discusses electron transitions between energy levels. The video explains that emission occurs when an electron moves from a higher to a lower energy state, releasing a photon. It emphasizes the inverse relationship between energy gap and wavelength, meaning a smaller energy gap corresponds to a maximum wavelength.
Motion of a Charged Particle in a Current-Carrying Loop (10:06-13:06): It's given the motion of a charged particle projected along the axis of a current-carrying loop. It is explained that since the magnetic field and the particle's velocity are parallel, the magnetic force on the particle is zero, resulting in constant velocity.
Magnet Falling Through a Solenoid (13:09-15:11): The video explains that a magnet falling through a solenoid will take longer than one falling through air due to the induced magnetic field opposing the magnet's motion, according to Lenz's Law.
AC Generator EMF and Angular Frequency (15:14-17:01): The final section discusses the EMF generated by an AC generator. The formula V = NBAωsin(ωt) is used to demonstrate that if the angular frequency (ω) is doubled, the EMF also doubles and the new expression for EMF becomes 2V₀sin(2ωt).