Question

a) Can the image formed by a simple microscope be projected on a screen without using any additional lens or mirror? b)The angular magnification of a system is less than one. Does it mean that the image formed is inverted?

Answer 1

a) The nature of image formed by simple Microscope is:

• Virtual
• Erect

Hence as we know that virtual image cannot be caught on a screen  without

using any additional lens or mirror

b) Angular magnification is defined as the ratio of the angle subtended by the final image on the eye to the angle subtended by the object on the unaided eye.

• Its value less than one signifies reduction in the size of the image. It does not mean that the image is inverted.

Answer 2

ᴀ) ᴛʜᴇ ɴᴀᴛᴜʀᴇ ᴏғ ɪᴍᴀɢᴇ ғᴏʀᴍᴇᴅ ʙʏ sɪᴍᴘʟᴇ ᴍɪᴄʀᴏsᴄᴏᴘᴇ ɪs:

ᴠɪʀᴛᴜᴀʟ
ᴇʀᴇᴄᴛ
ʜᴇɴᴄᴇ ᴀs ᴡᴇ ᴋɴᴏᴡ ᴛʜᴀᴛ ᴠɪʀᴛᴜᴀʟ ɪᴍᴀɢᴇ ᴄᴀɴɴᴏᴛ ʙᴇ ᴄᴀᴜɢʜᴛ ᴏɴ ᴀ sᴄʀᴇᴇɴ  ᴡɪᴛʜᴏᴜᴛ

ᴜsɪɴɢ ᴀɴʏ ᴀᴅᴅɪᴛɪᴏɴᴀʟ ʟᴇɴs ᴏʀ ᴍɪʀʀᴏʀ

ʙ) ᴀɴɢᴜʟᴀʀ ᴍᴀɢɴɪғɪᴄᴀᴛɪᴏɴ ɪs ᴅᴇғɪɴᴇᴅ ᴀs ᴛʜᴇ ʀᴀᴛɪᴏ ᴏғ ᴛʜᴇ ᴀɴɢʟᴇ sᴜʙᴛᴇɴᴅᴇᴅ ʙʏ ᴛʜᴇ ғɪɴᴀʟ ɪᴍᴀɢᴇ ᴏɴ ᴛʜᴇ ᴇʏᴇ ᴛᴏ ᴛʜᴇ ᴀɴɢʟᴇ sᴜʙᴛᴇɴᴅᴇᴅ ʙʏ ᴛʜᴇ ᴏʙᴊᴇᴄᴛ ᴏɴ ᴛʜᴇ ᴜɴᴀɪᴅᴇᴅ ᴇʏᴇ.

ɪᴛs ᴠᴀʟᴜᴇ ʟᴇss ᴛʜᴀɴ ᴏɴᴇ sɪɢɴɪғɪᴇs ʀᴇᴅᴜᴄᴛɪᴏɴ ɪɴ ᴛʜᴇ sɪᴢᴇ ᴏғ ᴛʜᴇ ɪᴍᴀɢᴇ. ɪᴛ ᴅᴏᴇs ɴᴏᴛ ᴍᴇᴀɴ ᴛʜᴀᴛ ᴛʜᴇ ɪᴍᴀɢᴇ ɪs ɪɴᴠᴇʀᴛᴇᴅ.