Will higher frequency light eject greater number of electrons than low frequency light?
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Low frequency light (red) is unable to cause ejection of electrons from the metal surface. At or above the threshold frequency (green) electrons are ejected. Even higher frequency incoming light (blue) causes ejection of the same number of electrons but with greater speed.
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ʟᴏᴡ ғʀᴇǫᴜᴇɴᴄʏ ʟɪɢʜᴛ (ʀᴇᴅ) ɪs ᴜɴᴀʙʟᴇ ᴛᴏ ᴄᴀᴜsᴇ ᴇᴊᴇᴄᴛɪᴏɴ ᴏғ ᴇʟᴇᴄᴛʀᴏɴs ғʀᴏᴍ ᴛʜᴇ ᴍᴇᴛᴀʟ sᴜʀғᴀᴄᴇ. ᴀᴛ ᴏʀ ᴀʙᴏᴠᴇ ᴛʜᴇ ᴛʜʀᴇsʜᴏʟᴅғʀᴇǫᴜᴇɴᴄʏ (ɢʀᴇᴇɴ) ᴇʟᴇᴄᴛʀᴏɴs ᴀʀᴇ ᴇᴊᴇᴄᴛᴇᴅ. ᴇᴠᴇɴ ʜɪɢʜᴇʀ ғʀᴇǫᴜᴇɴᴄʏ ɪɴᴄᴏᴍɪɴɢ ʟɪɢʜᴛ(ʙʟᴜᴇ) ᴄᴀᴜsᴇs ᴇᴊᴇᴄᴛɪᴏɴ ᴏғ ᴛʜᴇ sᴀᴍᴇɴᴜᴍʙᴇʀ ᴏғ ᴇʟᴇᴄᴛʀᴏɴs ʙᴜᴛ ᴡɪᴛʜ ɢʀᴇᴀᴛᴇʀ sᴘᴇᴇᴅ.
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