Question

Q-5 (B) Answer the following questions (any three)
(06)
1. Give two examples each of situations in which you push or pull to
change the state of motion of the objects.
2. A blacksmith hammers a hot piece of iron by making a tool. How does
the force due to hammering affect the piece of iron?
3. Identify the part which vibrates to produce sound in the following
instruments:
(a) Dholak
(b) Sitar
4. Explain in what way noise pollution is harmful to human.​

Answer 1

Answer:

1.

ᴇxᴀᴍᴘʟᴇs ᴏғ ᴘᴜsʜɪɴɢ:

ɪ) ᴘᴜsʜɪɴɢ ᴀ ʜᴇᴀᴠʏ ʙʟᴏᴄᴋ ᴛᴏ ᴅɪsᴘʟᴀᴄᴇ ɪᴛ ғʀᴏᴍ ɪᴛs ᴏʀɪɢɪɴᴀʟ ᴘᴏsɪᴛɪᴏɴ.

ɪɪ) ᴘᴜsʜɪɴɢ ᴀ ᴛʀᴏʟʟᴇʏ.

ᴇxᴀᴍᴘʟᴇs ᴏғ ᴘᴜʟʟɪɴɢ:

ɪ) ᴅʀᴀᴡɪɴɢ ᴀ ʙᴜᴄᴋᴇᴛ ᴏғ ᴡᴀᴛᴇʀ ғʀᴏᴍ ᴀ ᴡᴇʟʟ.

ɪɪ) ᴏᴘᴇɴɪɴɢ ᴀ ᴅʀᴀᴡᴇʀ ᴏғ ᴀ ᴛᴀʙʟᴇ.

2.

ᴛʜᴇ ғᴏʀᴄᴇ ɪs ᴀᴘᴘʟɪᴇᴅ ᴅᴜᴇ ᴛᴏ ʜᴀᴍᴍᴇʀɪɴɢ ᴄᴀᴜsᴇs ᴛʜᴇ ᴄʜᴀɴɢᴇ ɪɴ sʜᴀᴘᴇ ᴏғ ɪʀᴏɴ ᴀɴᴅ ɪʀᴏɴ ᴄᴀɴ ʙᴇ ᴍᴏᴜʟᴅᴇᴅ ɪɴ ᴛʜᴇ sʜᴀᴘᴇ ᴏғ ᴛʜᴇ ʀᴇǫᴜɪʀᴇᴅ ᴛᴏᴏʟ.

4.

ɴᴏɪsᴇ ᴘᴏʟʟᴜᴛɪᴏɴ ᴄᴀɴ ᴄᴀᴜsᴇ ʜᴇᴀʟᴛʜ ᴘʀᴏʙʟᴇᴍs ғᴏʀ ᴘᴇᴏᴘʟᴇ ᴀɴᴅ ᴡɪʟᴅʟɪғᴇ, ʙᴏᴛʜ ᴏɴ ʟᴀɴᴅ ᴀɴᴅ ɪɴ ᴛʜᴇ sᴇᴀ. ғʀᴏᴍ ᴛʀᴀғғɪᴄ ɴᴏɪsᴇ ᴛᴏ ʀᴏᴄᴋ ᴄᴏɴᴄᴇʀᴛs, ʟᴏᴜᴅ ᴏʀ ɪɴᴇsᴄᴀᴘᴀʙʟᴇ sᴏᴜɴᴅs ᴄᴀɴ ᴄᴀᴜsᴇ ʜᴇᴀʀɪɴɢ ʟᴏss, sᴛʀᴇss, ᴀɴᴅ ʜɪɢʜ ʙʟᴏᴏᴅ ᴘʀᴇssᴜʀᴇ.

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