MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: upto college level
        
The (average) human body floats in water. SCUBA divers wear weights and a flotation vest that can fill with a varying amount of air to establish neutral buoyancy. Assume that a diver originally establishes neutral buoyancy at one depth. To establish neutral buoyancy at a lower depth, the diver should
(A) let some air out of the vest.
(B) add some air to the vest.
(C) do nothing, because neutral buoyancy already exists.
3 years ago

Answers : (1)

Navjyot Kalra
askIITians Faculty
654 Points
							The correct option is (A).
When an object floats in water, there is a buoyancy force which acts upwards on the objects. According to Archimedes’ principle, the magnitude of the buoyant force is depending on the density of the water and the volume of the object. Thus, the object will sink if we decrease the volume of the object to maintain the buoyancy. So, SCUBA divers can float in the water by varying the amount of air in the floatation vest. This changes their overall volume in the water. Now, the diver can establish neutral buoyancy at one depth by varying the volume of the air in the vest. If he wants to established neutral buoyancy at a lower depth, the volume of the vest should be change. This is possible by reducing the amount of air out of the vest. So, the overall volume decreases and the diver can go further depth. Therefore, option (A) is correct.
Other options are ruled out.
3 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Get Extra Rs. 276 off

COUPON CODE: SELF10


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Get Extra Rs. 297 off

COUPON CODE: SELF10

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details