21. The surface tension of liquid is 0.5 N/m. If a film is held on a
The surface tension of liquid is 0.5 N/m. If a film is held on a ring of area 0.02 m2, its surface energy is
(a) 5 × 10-2 joule
(b) 2.0 × 10-2 joule
(c) 4 × 10-4 joule
(d) 0.8 × 10-1 joule
Ans. b
(7)
You May Also Like
-
Feb 10, 2025
Click Here for Hindi medium NEET Course (239)
-
Feb 4, 2025
Best Career Counsellors in Chandigarh – Transform Your Future with Flame Institute In today’s competitive world, choosing the right career...
-
Sep 17, 2024
Best Physics coaching Teacher in Chandigarh Mohali At Flame Institute, our physics teacher is highly experienced, specializing in preparing students...
-
Sep 5, 2022
(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)