Physics · LAWS OF MOTION
हिन्दीMatch the device/method in List-I with its physical application in List-II: List-I List-II A Ball bearings I Reduces friction between moving parts in machines B Thin cushion of air II Maintained between solid surfaces in relative motion C Lubricants III Used to reduce kinetic friction in sliding machine parts D Tyres on road IV Provides necessary external force to accelerate car Choose the correct answer from the options given below:
Match the device/method in List-I with its physical application in List-II:
| List-I | List-II | ||
|---|---|---|---|
| A | Ball bearings | I | Reduces friction between moving parts in machines |
| B | Thin cushion of air | II | Maintained between solid surfaces in relative motion |
| C | Lubricants | III | Used to reduce kinetic friction in sliding machine parts |
| D | Tyres on road | IV | Provides necessary external force to accelerate car |
Choose the correct answer from the options given below:
Correct answer · Option 2
A-(I), B-(II), C-(III), D-(IV)
Explanation
All listed pairs correctly match standard practical methods of reducing friction or utilizing static friction.