Question

2.Both the ends of the crystalline rod are silvered to keep them​

Answer 1

Answer:

Both the ends are crystalline rod are silvered to keep it away from rusting

and keep it long lasting .

Answer 2

ɪɴᴇʀᴛɪᴀ ɪꜱ ᴛʜᴇ ʀᴇꜱɪꜱᴛᴀɴᴄᴇ ᴏꜰ ᴀɴʏ ᴘʜʏꜱɪᴄᴀʟ ᴏʙᴊᴇᴄᴛ ᴛᴏ ᴀɴʏ ᴄʜᴀɴɢᴇ ɪɴ ɪᴛꜱ ᴠᴇʟᴏᴄɪᴛʏ. ᴛʜɪꜱ ɪɴᴄʟᴜᴅᴇꜱ ᴄʜᴀɴɢᴇꜱ ᴛᴏ ᴛʜᴇ ᴏʙᴊᴇᴄᴛ'ꜱ ꜱᴘᴇᴇᴅ, ᴏʀ ᴅɪʀᴇᴄᴛɪᴏɴ ᴏꜰ ᴍᴏᴛɪᴏɴ. ᴀɴ ᴀꜱᴘᴇᴄᴛ ᴏꜰ ᴛʜɪꜱ ᴘʀᴏᴘᴇʀᴛʏ ɪꜱ ᴛʜᴇ ᴛᴇɴᴅᴇɴᴄʏ ᴏꜰ ᴏʙᴊᴇᴄᴛꜱ ᴛᴏ ᴋᴇᴇᴘ ᴍᴏᴠɪɴɢ ɪɴ ᴀ ꜱᴛʀᴀɪɢʜᴛ ʟɪɴᴇ ᴀᴛ ᴀ ᴄᴏɴꜱᴛᴀɴᴛ ꜱᴘᴇᴇᴅ, ᴡʜᴇɴ ɴᴏ ꜰᴏʀᴄᴇꜱ ᴀᴄᴛ ᴜᴘᴏɴ ᴛʜᴇᴍ.