RBSE Praveshika Science case studies
RBSE Praveshika Science · Put your knowledge to work in context.
Praveshika Science is the science paper of the Praveshika examination conducted by the Board of Secondary Education, Rajasthan (RBSE) - a secondary-level board qualification delivered through the Sanskrit-education stream. Candidates normally reach it after completing the preceding stage of that stream. The RBSE Praveshika Science case studies are 5 cases and about 4,048 words.
1Ramesh's flour-mill shed: sizing the load before blaming the MCB
Ramesh runs a small flour mill from a shed attached to his house in a Rajasthan village. The shed is wired as a single 15 A circuit ending in one power socket; the house lighting runs on a separate 5 A circuit carrying four 60 W bulbs.
811 words, about 4 min2Sunita's convex lens: why the screen image vanishes
Sunita's physics teacher hands her a convex lens and tells her only that its focal length is 15 cm. Her task is to form a real image of a candle flame on a screen using the school optical bench.
767 words, about 4 min3Hostel kitchen audit: five changes, five different explanations
A student science club audits storage in the school hostel kitchen and records five observations. (i) The iron tawa hanging near an open window has reddish-brown flaky patches, and the patches are worst on the side facing the window.
794 words, about 4 min4Ankit's 400 m race on a humid afternoon
Ankit, a Class 10 student, runs the 400 m race at the annual sports meet on a hot, humid afternoon - 38 °C with relative humidity around 85%, and a light breeze only near the finish. He finishes in 62 s, faster than any of his practice runs.
835 words, about 4 min5The delivery rider, the child, and eighteen metres
A delivery rider on a straight, level road travels at 36 km/h. He suddenly sees a child run onto the road 18 m ahead.
841 words, about 4 min