Long answer·Hard exam skill (4/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
In a spherometer experiment, the mean distance between the three legs is and the central screw rises by when moved from a plane glass plate to a spherical surface. Find the radius of curvature and mention one precaution.
Total: 5 marks
(a) State the formula for radius of curvature. (1 mark)
(b) Compute the radius of curvature. (3 marks)
(c) State one relevant precaution. (1 mark)
Something wrong with this item?