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प्रश्न
The wavelength of light of a particular colour is 5800 Å.
Express it in nanometre.
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उत्तर
As we know, 1 nm = 10 Å
Given, Wavelength of light of particular colour = 5800 Å
Substituting the value of wavelength in the relation above, we get,
10 Å = 1 nm
1 Å = `1/10` nm
∴ 5800 Å = `1/10` × 5800 nm
∴ 5800 Å = 580 nm
Hence, wavelength of 5800 Å in nm = 580 nm.
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संबंधित प्रश्न
Define metre according to the old definition.
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(a) A vernier scale has 20 divisions. It slides over the main scale, whose pitch is 0.5 mm. If the number of divisions on the left hand of the zero of vernier on the main scale is 38 and the 18th vernier scale division coincides with the main scale, calculate the diameter of the sphere, held in the jaws of vernier callipers.
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Define the term pitch.
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When does a vernier callipers has the positive error?
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(i) Find the least count of the instrument.
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