2025 · Q114
Match List-I with List-II and select the answer using the code given below the Lists :
List I (Device):
- APeriscope;
- BLightning conductors;
- CThermos flask;
- DLevers.
List II (Phenomenon):
- 1Conduction and convection minimization;
- 2Moment of a force;
- 3Reflection by plane mirrors;
- 4Static electricity. Code :
general-sciencephysics-light-electricity
- AA B C D 2 4 1 3
- BA B C D 3 1 4 2
- CA B C D 3 4 1 2
- DA B C D 2 1 4 3
Explanation
A periscope works by reflection at plane mirrors (A-3); lightning conductors dissipate atmospheric static electricity (B-4); a thermos flask minimises heat transfer by conduction and convection (C-1); levers work on the moment of a force (D-2). Hence the code is A-3, B-4, C-1, D-2.