Active, Dormant, and Extinct
Answer: Option (A), (B), (C) and (D)
Explanation: A mineral is defined as a naturally arising, inorganic solid, that contains a precise chemical composition and defined crystal structure. Minerals combines to form rocks. A rock contains various minerals which are formed at different pressure and temperature condition. For example, olivine, quartz, gypsum and calcite.
Minerals are often classified as oxide minerals, carbonate minerals, silicate minerals, sulfate and sulfide minerals.
Thus, all the given options are a characteristics of a mineral.
Answer:
Option (C)
Explanation:
The angular resolution formula,
Sin A= 0.25 (Wavelength ÷ Diameter)
where, wavelength is taken in micrometer and diameter is in meter.
Here, wavelength (W)= 650 nm = 0.65 μm (converting nanometer into micrometer)
Diameter= 2 m
now, according to the formula,
![\sin A=0.25\times [\dfrac{wavelength}{diameter}]\\\\\sin A=0.25\times \dfrac{0.65\ \mu m}{2\ m}\\\\\sin A=0.08125''\\\\\sin A\approx 0.082''](https://tex.z-dn.net/?f=%5Csin%20A%3D0.25%5Ctimes%20%5B%5Cdfrac%7Bwavelength%7D%7Bdiameter%7D%5D%5C%5C%5C%5C%5Csin%20A%3D0.25%5Ctimes%20%5Cdfrac%7B0.65%5C%20%5Cmu%20m%7D%7B2%5C%20m%7D%5C%5C%5C%5C%5Csin%20A%3D0.08125%27%27%5C%5C%5C%5C%5Csin%20A%5Capprox%200.082%27%27)
Thus, the correct answer is option (C) i.e. 0.082 arc second.
Explanation:
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