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प्रश्न
The wavelength of light of a particular colour is 5800 Å.
Express it in metre.
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उत्तर
As we know, 1 m = 1010 Å
Given, Wavelength of light = 5800 Å
Substituting the value of wavelength in the relation above, we get,
1010 Å = 1 m
1 Å = 10-10 m
∴ 5800 Å = 5800 × 10-10 m
∴ 5800 Å = 5.8 × 10-7 m
Hence, wavelength of 5800 Å in m = 5.8 × 10 -7m.
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संबंधित प्रश्न
State three uses of the vernier callipers.
Name the two scales of a vernier callipers and explain how it is used to measure length correct up to 0.01 cm.
Name the instrument which has the least count
0.1 mm
The pitch of a screw gauge is 0.5 mm and the head scale is divided in 100 parts. What is the least count of a screw gauge?
The main scale of vernier callipers has 10 divisions in a centimetre and 10 vernier scale divisions coincide with 9 main scale divisions. Calculate
- pitch
- L.C. of vernier callipers.
State the correction if the positive error is 7 divisions when the least count is 0.01 cm.
Which part of vernier callipers is used to measure the external diameter of a cylinder?
