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Question
Lenses used in ultraviolet microscope are
Lenses used in ultraviolet microscope are
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Solution
The correct option is C Both B and C.
The visible light wavelengths are longer, between 400 nm and 700 nm. Quartz will transmit UV from 180 nm to 400 nm. Since quartz is made of silicon dioxide, glasses made from a high proportion of this material will also readily transmit UV. One such glass is known as VYCOR, which is 96% silica.The glass lenses usually used in optical microscopes created a cloudy or unclear image when used at the shorter wavelength of UV light.
crystalline quartz, calcium, or lithium fluoride these can be used.
Hence the correct answer is (D)
The visible light wavelengths are longer, between 400 nm and 700 nm. Quartz will transmit UV from 180 nm to 400 nm. Since quartz is made of silicon dioxide, glasses made from a high proportion of this material will also readily transmit UV. One such glass is known as VYCOR, which is 96% silica.
The glass lenses usually used in optical microscopes created a cloudy or unclear image when used at the shorter wavelength of UV light.
crystalline quartz, calcium, or lithium fluoride these can be used.
Hence the correct answer is (D)
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