Everyday Science
How long does it take sunlight to reach Earth?
8 minutes & 20 seconds
8 minutes
8 minutes and 50 seconds
None of these
8 minutes & 20 seconds
It takes 8 minutes and 20 seconds for sunlight to reach Earth. The Sun is about 93 million miles away from Earth, and light travels at a speed of 186,000 miles per second. So, it takes about 8 minutes and 20 seconds for sunlight to travel from the Sun to Earth.
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Vitamin C is soluble inA. fat
B. water
C. ethers
D. phenols
The density of air in the atmosphere is
A. uniform
B. not uniform
C. zero
D. none of above
In the body, the weight of blood is about
A. 1/12th of body
B. 1/5th of body
C. 1/8th of body
D. 1/4th of body
Which substance is present in fuel?
A. Iron
B. Gold
C. Carbon
D. Copper
The energy stored in coal is
A. kinetic energy
B. potential energy
C. chemical energy
D. nuclear energy
A human breath per minute is
A. 16-30 times
B. 16-20 times
C. 15-20 times
D. 15-18 times
Symbol of Copper is
A. Ca
B. Cl
C. Co
D. Cu
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