2022Class 12Set 55/1/135 marks12 questions
7 of its 12 questions are here. The rest have a figure or are still being checked, so for now they're only in the official PDF.
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Source: CBSE Board Examination 2022, Class 12 Physics (042), paper 55/1/1, published by CBSE. CBSE's ZIP of every set
Write the characteristics of a p-n junction which make it suitable for rectification.
Define the term – Distance of closest approach. How will it be affected, for an α - particle, if kinetic energy of the particle is doubled ?
A point source in air is kept 24 cm in front of a concave spherical glass surface (ₐμg = 1.5) and radius of curvature 60 cm. Find the nature of the image formed and its distance from the point source.
Calculate the energy released in MeV in the following reaction : ²₁H + ³₁H ⟶ ⁴₂He + n Given : m(²₁H) = 2.014102 u m(³₁H) = 3.016049 u m(⁴₂He) = 4.002603 u mₙ = 1.008665 u
(a) A parallel beam of light of wavelength 600 nm is incident normally on a slit of width 0.2 mm. If the resulting diffraction pattern is observed on a screen 1 m away, find the distance of
Photoelectrons are emitted from a metal surface when illuminated with UV light of wavelength 330 nm. The minimum amount of energy required to emit the electrons from the surface is 3.5 × 10⁻¹⁹ J. Calculate :
State the working principle of an LED. Write any two important advantages and two disadvantages of LED.