Advertisements
Advertisements
प्रश्न
The wavelength of light of a particular colour is 5800 Å.
Express it in metre.
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.
APPEARS IN
संबंधित प्रश्न
What is meant by zero error of vernier callipers ? How is it determined? Draw neat diagrams to explain it. How is it taken in account to get the correct measurement?
State the purpose of ratchet in a screw gauge.
The pitch of a screw gauge is 1 mm and the circular scale has 100 divisions. In measurement of the diameter of a wire, the main scale reads 2 mm and 45th mark on the circular scale coincides with the base line. Find
(i) The least count and
(ii) The diameter of the wire.
(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.
(b) If the vernier has a negative error of 0.04 cm, calculate the corrected radius of the sphere.
Figure shows a screw gauge in which circular scale has 100 divisions. Calculate the least count and the diameter of a wire.
What do you understand by the following term as applied to micrometre screw gauge?
Thimble
