Question

Which is a streamlined object?
(a) Boats
(b) Aeroplanes
(c) Ships
(d) All of these

Answer 1

Answer:

(d) All of these

Explanation:

All of the above mentioned have streamlined bodies that help them travel quickly and create a minimum of friction against either air or water.

Answer 2

Streamlined objects are designed to reduce fluid or aerial friction.

Meaning of Streamlined Object:

• The objects that are designed in such a way to increase the speed of travel are called streamlined objects.
• Streamlined shapes help in reducing the amount of air drag while an object is moving.

Example of Streamlined Objects:

1. A. Boats: The boats are designed in a streamlined position to reduce the fluid friction. Thus, boats move faster in rivers.
2. B. Aeroplanes: The aeroplanes are designed to reduce the air drag or the resistance to motion caused throughout the stream of air.
3. C. Ships: The ships are designed in a way that helps them move quickly and more efficiently in oceans.

Hence, D. All of these options are examples of streamlined objects.