List of top Mathematics Questions on Tangents and Normals asked in Tripura JEE

For what value of $ n $, the curve \[ \left( \frac{x}{a} \right)^n + \left( \frac{y}{b} \right)^n = 2 \text{ touches the straight line } \frac{x}{a} + \frac{y}{b} = 2 \text{ at the point } (a, b)? \]