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Answers
Answer:
1.electric wires are covered with rubber because current not flow outside the wire and we touch the wire we don't take current fr wire
1.Real Image -
Image that can be formed on a screen is called Real Image.
2. It is denoted by . line
3.Real Image is always inverted
2.Virtual Image -
Image that can not formed on a screen is called virtual image
2.It is not denoted by . line
3.virtual image is always upright
Q.7)
1 Ans - 1.There are three types of electric wires live wire , neutral wire and earth wire
2. If live and neutral wire came in contact overheating and short circuit takes place as they have potential difference of 220V
3.Rubber and plastic are bad conductor of electricity
4. Due to rubber and plastic we don't get shock when we touch the wire
2 Ans - Reproduction is Necessary in both plants and humans . In plants It is important for plants as it provides variation to the progeny that helps in better survival and helps it to gain its own uniqueness within the species and remove the unwanted genes and in Humans it is Important for Transferring of genes and To Birth a Baby by Sperm collected from male body and ova collected from female body forms egg which Makes Increase in population from parents to offspring in generation to generation . (In This Question Check that wheather reproduction is Important in plants or humans)
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