Subject: General Knowledge and IQ
Sun is the nearest star of the earth which has got 3 x 108 m/s velocity of light in the sun. The light rays take 8 minutes and 20 seconds to reach the earth. The velocity of solar wind in the sun is 500 km. per second 1,392,003 Km(1.4 x 100Km). The velocity of solar wind in the sun is 500 km. per second 1,392,003 Km(1.4 x 100Km) and the diameter of the sun is 1,392,003 Km(1.4 x 100Km).
Sun is light yellow in color. The surface temperature of the sun is 5,778 K and the core temperature is27 million degrees F. The mass of the sun is 329390 times bigger than the earth. In the sun, Hydrogen (75%) gas can be abundantly found. There are three types of layers in the sun. They are -photosphere (central), Chromosphere (middle), Corona (outer).
Proxima Centauri is the nearest star of the sun. Helioscope is the device which can observe the sun. Its central temperature is 15, 000, 000Â° C and its surface temperature is 5,500 Celsius. Sun is 1, 300, 000 times bigger than the earth. It has got 320 satellites. Its mean density is 1.4 g/cm3. Age of the sun is 14,500,000,000 years. Plasma is the gaseous charged particles emitted by the sun in the form of the solar system and the life of the sun is depends upon the Hydrogen gas.
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