The CBSE Class 11 Physics practical exam is just around the corner. While the notebook and experiment carry marks, the (oral questions) often makes students the most nervous. The external examiner wants to check if you actually did the experiment or just copied the readings.
By reviewing these questions and understanding the underlying physics, you will be well-prepared to turn your Class 11 Physics viva into a high-scoring conversation. Success in the lab is as much about your communication as it is about your calculations. To provide more specific help for your viva prep: Cbse Class 11 Physics Practical Viva Questions
A: The least count (LC) is the smallest measurement that can be accurately read. For a standard Vernier Caliper, LC = 1 Main Scale Division (MSD) – 1 Vernier Scale Division (VSD). Typically, 1 MSD = 1 mm, and 10 VSD = 9 MSD, hence LC = 1 mm – 0.9 mm = 0.1 mm or 0.01 cm . The CBSE Class 11 Physics practical exam is
The CBSE Class 11 Physics practical syllabus covers topics such as: For a standard Vernier Caliper, LC = 1
Before diving into specific experiments, the examiner will test your familiarity with basic lab tools. Be ready for these:
Why do we stir the liquid during this experiment?Stirring ensures a uniform temperature throughout the liquid so that the thermometer reading is accurate for the entire volume. Common Closing Questions
What is the "pitch" of a screw gauge?The pitch is the linear distance moved by the screw in one complete rotation of the circular head.
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