Question

In which groups can articles belonging to wheel-and-axle be found?

• A. P & Q
• B. R & S
• C. P, Q & R
• D. Q, R & S

Answer 1

Answer: (C)

P, Q & R

$\text{Solution}:$

1. Wheel and axle, basic machine component for amplifying force.

2. In its earliest form it was probably used for raising weights or water buckets from wells.

3. Its principle of operation is demonstrated by the large and small gears attached to the same shaft

$\text{Hence C is the correct option}$