Kerala Plus Two Physics (DHSE) case studies
Kerala Plus Two Physics (DHSE) · Put your knowledge to work in context.
The Kerala Higher Secondary Certificate (HSC) Physics examination is the Class 12 physics paper set by the Directorate of Higher Secondary Education (DHSE), Kerala, and taken by students completing the science stream of the state higher secondary course. It is a school-leaving and higher-education entrance qualification: results feed into university and professional-course admissions, so the mark matters beyond mere promotion. The Kerala Plus Two Physics (DHSE) case studies are 5 cases and about 2,962 words.
1Capacitor with a Partly Filling Dielectric
A student charges a parallel-plate capacitor of plate area 0.020 m² and plate separation 2.0 mm to 200 V from a battery, then disconnects the battery. She inserts a glass slab of dielectric constant 6.0, thickness 1.8 mm and area 0.018 m², intending to fill the gap.
660 words, about 3 min2Metre Bridge with End Errors and a Null Near the End
In a metre-bridge experiment, a student connects an unknown resistor R in the left gap and a 2.0 Ω standard resistor S in the right gap. The galvanometer shows a null at 89.5 cm from the left end.
591 words, about 3 min3Current Balance near the End of a Solenoid
A student builds a current balance to measure the magnetic field inside a long solenoid. The solenoid has 500 turns per metre and carries 2.0 A.
599 words, about 3 min4School Transformer with a Solid Core
A student winds a transformer to operate a 12 V, 24 W lamp from a 230 V, 50 Hz supply. She uses 1000 turns on the primary and calculates 52 turns on the secondary.
588 words, about 3 min5Optical Fibre Demonstration with a Sharp Bend
A school demonstration uses a step-index plastic optical fibre with core refractive index 1.50 and cladding refractive index 1.48. The fibre is 2.0 m long and is coupled to a laser pointer whose beam enters the flat end at angles up to 25° from the fibre axis.
524 words, about 3 min