To solve the problem, we need to identify which responsibility among the options is handled by the technical committee after a competition has taken place.
1. Role of the Technical Committee:
The technical committee in sports events is primarily responsible for ensuring smooth conduct of competitions, including technical arrangements before, during, and after the event. Post-competition duties often involve wrapping up and restoring resources used during the event.
2. Evaluating the Options:
- (A) Requisition to purchase equipment: This is a pre-event administrative responsibility, not post-competition.
- (B) Arrangement of equipment and stationery: This is done before or during the competition, not after.
- (C) Arrangement of officials: This is a prior-to-event duty.
- (D) Maintenance of the field: This is a key post-competition responsibility — ensuring the field is restored and maintained after the event ends.
Final Answer:
(D) Maintenance of the field
A current-carrying coil is placed in an external uniform magnetic field. The coil is free to turn in the magnetic field. What is the net force acting on the coil? Obtain the orientation of the coil in stable equilibrium. Show that in this orientation the flux of the total field (field produced by the loop + external field) through the coil is maximum.
Three students, Neha, Rani, and Sam go to a market to purchase stationery items. Neha buys 4 pens, 3 notepads, and 2 erasers and pays ₹ 60. Rani buys 2 pens, 4 notepads, and 6 erasers for ₹ 90. Sam pays ₹ 70 for 6 pens, 2 notepads, and 3 erasers.
Based upon the above information, answer the following questions:
(i) Form the equations required to solve the problem of finding the price of each item, and express it in the matrix form \( A \mathbf{X} = B \).