Q5. Answer in brief. (Any Three)
1. Mention the steps involved in plotting a distance-time graph.
2. How does an electric fuse work? Why is it required in all electrical appliances?
3. What is a newton's dise? How can you make it?
4. Briefly describe the effect of water scarcity on plants.
Answers
Answer:
2) A fuse is a small piece of wire connected in series with the electrical appliances. This wire is chosen such that it melts when excess current passes through the electrical appliance. ... Hence an electric fuse required in all electrical appliances for the protective reason of the appliance.
3) A Newton Disc can be created by painting a disc with the seven different colours. A combination of red, green and blue in the circular disc will yield the same result due to the phenomenon called persistence of vision.
4) Plants go through a process of photosynthesis to produce their food. ... But when there is a shortage of water, the plants may slow down the process of photosynthesis or even stop it. And due to this, the internal food supply becomes reduced or diminished.