Question
Explain why the cutting instruments are sharpened.
✓
Answer
Cutting instruments have very small area of cross – section, which lead to the increase in pressure. So they can easily penetrate the surface (pressure is inversely proportional to area). That’s why cutting instruments are usually very much sharpened.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Give a reason for the following
When you touch the metal disc of an electroscope with a charged glass rod the metal leaves get diverged.
When you touch the metal disc of an electroscope with a charged glass rod the metal leaves get diverged.
Write the names of the following compounds.a. $CO$
b. $N _2 O$
c. $NO _2$
d. $PCl _5$
→b. $N _2 O$
c. $NO _2$
d. $PCl _5$
What is the function of silvered wall in a thermos flask?
Explain the uses of oxygen.
You would have noticed some space being left in railway tracks. Why?
Why do scuba divers wear a special suit while they go into deep sea levels?
How are protozoans classified?
What are the various modes of transfer of heat?
Convert 100 K into Celsius.