CHSE Odisha Elective Physics case studies
CHSE Odisha Elective Physics · Put your knowledge to work in context.
The CHSE Odisha Elective Physics paper is the subject examination taken by Higher Secondary (+2) science students in Odisha who choose Physics as an elective, and its marks feed directly into the board result used for university admission and for eligibility in entrance tests such as JEE and NEET. It rewards a candidate who can do three different things: state and derive standard results, explain physical phenomena in words, and solve numerical problems with correct units and significant figures. The CHSE Odisha Elective Physics case studies are 5 cases and about 4,439 words.
1One Potentiometer, Three Cells, One Driver
A Class XII student must measure two emfs on the same potentiometer. The slide wire is 10 m long with a resistance of 20 Ω, the driver is a 2.0 V lead–acid cell, and a 1.018 V standard cell is available for calibration.
879 words, about 4 min2Two Lamps in Series at the Exhibition Stall
An exhibition stall is lit by two incandescent lamps taken from a store: one rated 100 W, 220 V and the other 60 W, 220 V. Because only one socket is free, a student connects them in series across the 220 V mains, expecting both to give their rated brightness.
814 words, about 4 min3The Choke, the Wattmeter and the 4 µF Capacitor
A shopkeeper's 40 W fluorescent batten is rated for 220 V, 50 Hz and uses a magnetic choke in series with the tube. He complains that it flickers at start-up.
897 words, about 4 min4A 60 mm Refractor, a Fixed Tube and Two Eyepieces
An amateur astronomy club owns an achromatic objective of focal length 1200 mm and diameter 60 mm, mounted in a fixed tube whose length from objective to eyepiece holder is exactly 1200 mm and cannot be altered. Two eyepieces are available, of focal length 25 mm and 10 mm, along with a 2× Barlow lens.
874 words, about 4 min5Choosing Sources for a Foil Gauge and a Pipeline Tracer
A small industrial physics laboratory must set up two measurements using only sources already in its store. (i) Continuous gauging of the thickness of aluminium foil leaving a rolling mill at 0.05 mm, where the gauge must detect a 1 % thickness change and hold its calibration for years without re-standardising.
975 words, about 5 min