The second excited state of hydrogen atom corresponds to n = 3 and as per Bohr’s model the angular momentum of electron is 3h/2pi. Class 12 Physics NCERT Sample Paper Question Session 2024-2025.
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When an intrinsic semiconductor is doped with a trivalent impurity (say aluminium), an additional acceptor energy level is formed slightly above the top of the valence band. As a result energy gap is reduced to a large extent. Class 12 ...
When object is placed at focus of microscope lens, its magnified image is formed at infinity and magnifying power m = D/f = 25cm/5cm = 5. Class 12 Physics NCERT Sample Paper Question Session 2024-2025.
As object approaches a converging lens from infinity to its focus with a uniform speed, its image moves away from the lens. The image starts from focus and goes upto infinity. The image is real and inverted one. Class 12 ...
The brightness of the bulb does not change because there is no effect of inductance of the solenoid in a d.c. circuit. Class 12 Physics NCERT Sample Paper Question Session 2024-2025.