RBSE SS Physics case studies
RBSE SS Physics · Put your knowledge to work in context.
The RBSE Senior Secondary Physics credential is the Class 12 physics qualification awarded under the Rajasthan Board of Secondary Education, the state board that sets syllabi and conducts senior secondary examinations for schools affiliated to it in Rajasthan. It matters most to students completing Class 12 who need the subject for university admission in science and engineering streams, and to private candidates or repeaters finishing board requirements. The RBSE SS Physics case studies are 5 cases and about 2,994 words.
1Dielectric Slab in a Capacitor: Safe Voltage Judgement
A teaching laboratory has a parallel-plate capacitor with circular plates of area 2.0 × 10^-2 m² and an adjustable gap. A 0.90 mm thick slab of dielectric (κ = 4.0, dielectric strength 20 kV/mm) is available, but it is slightly smaller than the plates.
680 words, about 3 min2Uprating a Workshop Breaker Without Rewiring
A small workshop is supplied by a single 230 V branch circuit protected by a 15 A miniature circuit breaker. The branch uses 2.5 mm² copper conductors with a total out-and-back length of 18 m; the resistivity of copper is 1.7 × 10^-8 Ω m.
604 words, about 3 min3Projector Lens: Fixed Screen and Magnification
A student is assembling a simple projector for a 3.0 cm tall transparency. A thin convex lens of focal length 15 cm is fixed on an optical bench, and a screen is clamped 45 cm from the lens.
578 words, about 3 min4Photocell With the Wrong Window: Red Laser and UV Line
A student is testing a photocell with a zinc cathode of work function 4.3 eV. The cell has an ordinary glass window.
535 words, about 3 min5Zener Shunt Regulator at Start-Up
A student builds a zener shunt regulator to provide 6.2 V to a small radio from a 12 V supply. The series resistor is 220 Ω, and the zener diode is rated 6.2 V, 500 mW.
597 words, about 3 min