General Principles in the Working of Levers, Balloon NDA Questions

NDA Physics

General Principles in the Working of Levers, Balloon MCQ Questions


13.
What is the function of a third-class lever?
A.
Reduces effort
B.
Increases speed
C.
Increases load
D.
Changes direction
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ANSWER :
B. Increases speed
14.
Which of these is NOT an example of a lever?
A.
Hammer
B.
Pulley
C.
Crowbar
D.
Fishing rod
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ANSWER :
B. Pulley
15.
How can the mechanical advantage of a lever be increased?
A.
Increase effort distance
B.
Decrease fulcrum distance
C.
Increase load
D.
Decrease lever length
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ANSWER :
A. Increase effort distance
16.
In which class of lever is the load located between the effort and fulcrum?
A.
First-class lever
B.
Second-class lever
C.
Third-class lever
D.
Compound lever
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ANSWER :
B. Second-class lever
17.
What is the main advantage of using a lever?
A.
Reduces weight
B.
Multiplies force
C.
Generates energy
D.
Reduces time
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ANSWER :
B. Multiplies force
18.
Which lever is commonly used in a see-saw?
A.
First-class lever
B.
Second-class lever
C.
Third-class lever
D.
None of the above
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ANSWER :
A. First-class lever