JEE Advanced Model Paper 11 with solutions for online practice

A rigid square loop is dipped in a wetting liquid and is taken out. A loop of lightinextensible thread of total length 15 units is gently put on the liquid film formedin the square frame. Now a hole is pricked inside the thread loop. Take the lengthof side of square frame is 4 units. Surface tension of liquid is S. Neglect anyfriction between square frame and thread. What will be the final surface area ofliquid film on one side of square frame after the hole is pricked?