Chapter 7: Problem 27

The use of the metal blade in a plough is (1) to penetrate deep into the soil easily. (2) to give strength to the L-shaped log. (3) to avoid breaking of wooden \(\log\) when it strikes a stone. (4) All the above

Short Answer

Expert verified

Answer: The main purpose of the metal blade in a plough is to penetrate deep into the soil easily and avoid breaking the wooden log when it strikes a stone.

Step by step solution

Analyze Option 1

The first option suggests that the metal blade's purpose in a plough is to penetrate deep into the soil easily. This is a correct statement because the metal blade helps in cutting and turning over the soil, which is essential for preparing the land for farming.

Analyze Option 2

The second option suggests that the metal blade's purpose is to give strength to the L-shaped log. The metal blade, without doubt, is stronger and more durable than a wooden log. While the metal blade adds some strength to the overall structure, it is not the main reason for using it in a plough. The primary purpose remains to help in digging deep into the earth, as mentioned in option 1.

Analyze Option 3

The third option indicates that the metal blade's purpose is to avoid breaking the wooden log when it strikes a stone. This is also a correct statement because the metal blade is more durable and stronger than wood, thus less likely to get damaged when striking hard objects, like stones, during ploughing.

Choose the correct option

Option 4 states "All the above." In steps 1, 2, and 3, we confirmed the validity of options 1 and 3. Although option 2 does hold some validity, it does not accurately represent the metal blade's main purpose in a plough. Therefore, the correct answer would be a combination of options 1 and 3. However, since there's no option corresponding to this, we can go with option 4 as the nearest satisfactory answer.

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The use of the metal blade in a plough is (1) to penetrate deep into the soil easily. (2) to give strength to the L-shaped log. (3) to avoid breaking of wooden \(\log\) when it strikes a stone. (4) All the above

Short Answer

Step by step solution

Analyze Option 1

Analyze Option 2

Analyze Option 3

Choose the correct option

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