Question

If a concave mirror of focal length 10 cm is immersed in water;then what will be its focal length

Answer 1

hey mate here your answer ☺☺☺☺

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Remain same , because the focal length of mirror doesn't depend on the external median in which it is held I. case of lenses is emerged in which the value of refractive index decrease

hence the focal length increase

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thanks☺☺

Answer 2

Answer:

ɪᴛ's ғᴏᴄᴀʟ ʟᴇɴɢᴛʜ ᴡᴏᴜʟᴅ ʙᴇ sᴀᴍᴇ = 10 cm.