Banking of roads

2026 Re-NEET 1 question

1. A car travels on a circular racetrack of radius 50 m, which is banked at an angle $\theta$. If the car travels at a speed 10 ms$^{-1}$, then the wear and tear on its tyres is minimum. Taking the acceleration due to gravity to be 10 ms$^{-2}$, the value of $\theta$ is: