BPSC – Combined Competitive Examination · প্রশ্ন 85
Which of the following is a non-contact force?
উত্তর দেখান ও ব্যাখ্যা
উত্তর: (A) Magnetic force
ব্যাখ্যা
Non-contact forces include magnetic, electrostatic and gravitational forces.
- (A) সঠিক
Correct: magnets act at a distance without touching.
- (B) ভুল
Wrong: friction needs surfaces in contact.
- (C) ভুল
Wrong: impact requires contact.
- (D) ভুল
Wrong: magnetic force is non-contact.