Download App

Force and Pressure — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceForce and Pressure3 Marks
Question
It is difficult to cut cloth using a pair of scissors with blunt blades. Explain.
✓

Answer

It is difficult to cut cloth using a pair of scissors with blunt blades because blunt blades have more area and due to which applied force produces very less pressure. As we know that pressure is inversely proportional to area of cross-section, so it is difficult to cut cloth from blunt blades.$\Big(\text{As};\text{p}=\frac{\text{F}}{\text{A}}\Big)$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "questions in short. [3 marks ]" from Force and Pressure→Force and Pressure — all question types→Science STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

Mention the frequency of sound produced when the vocal cords are (a) tight and thin, (b) loose and thick.
→
Sound produced by a stretched wire is due to vibrations. Show by an activity.
→
Mention the property of vibrations which determine the pitch of the sound. Briefly explain along with some examples.
→
Priya went to the school with umbrella on rainy season. One day, while returning from the school the rain started on the way. Priya opened her umbrella and saved herself from rainwater. After sometime, she observed some lightning sparks in the sky. Suddenly, she folded her umbrella and went to a shelter under a closed building.
(i) State the cause of lightning.
(ii) Priya folded her umbrella. Explain why?
(iii) Mention the method opted by Priya here.
→
Give the name of two places in India where the earthquake causes the large destruction to life and property.
→
Give two causes of noise pollution from the homes.
→
What is food poisoning? How is food poisoning caused?
→
Discuss the advantages of asexual reproduction.
→
What is a plastid? What is the name of green plastids present in plant cells?
→
Draw a picture representing particles present in the following:
(i) Aluminium foil
(ii) Glycerin
(iii) Methane gas
→