2. Questions Bank
  3. 8th Class
  4. Science
  5. Friction

8th Class Science Friction Question Bank Friction Formative Objective Problems

  • question_answer
    Airplanes are designed in a particular shape called the streamline shape. The streamline design reduces the

    A)  Speed of the plane  

    B)  Weight of the plane

    C)  The cost of production

    D)  Heat generated by air friction

    Correct Answer: D

    Solution :

      The shape of an airplane is made streamlined to reduce air friction. The streamlined shape allows the easy passage of air. Therefore, the heat generated by air friction becomes less. The correct answer is D.


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