2024Class 12Set 55/1/170 marks33 questions
17 of its 33 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 2024, Class 12 Physics (042), paper 55/1/1, published by CBSE. CBSE's ZIP of every set
Ten capacitors, each of capacitance 1 µF, are connected in parallel to a source of 100 V. The total energy stored in the system is equal to :
A loop carrying a current I clockwise is placed in x – y plane, in a uniform magnetic field directed along z-axis. The tendency of the loop will be to :
A 10 cm long wire lies along y-axis. It carries a current of 1.0 A in positive y-direction. A magnetic field B = (5 mT) ĵ − (8 mT) k̂ exists in the region. The force on the wire is :
A galvanometer of resistance G Ω is converted into an ammeter of range 0 to I A. If the current through the galvanometer is 0.1% of I A, the resistance of the ammeter is :
In the four regions, I, II, III and IV, the electric fields are described as : Region I : Eₓ = E₀ sin (kz − ωt) Region II : Eₓ = E₀ Region III : Eₓ = E₀ sin kz Region IV : Eₓ = E₀ cos kz The displacement current will exist in the region :
The transition of electron that gives rise to the formation of the second spectral line of the Balmer series in the spectrum of hydrogen atom corresponds to :
Ge is doped with As. Due to doping,
Two beams, A and B whose photon energies are 3·3 eV and 11·3 eV respectively, illuminate a metallic surface (work function 2·3 eV) successively. The ratio of maximum speed of electrons emitted due to beam A to that due to beam B is :