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Byju's Answer
Standard VII
Physics
Concept of Light Year
One light yea...
Question
One light year is the distance that ___ travels in a year.
A
earth
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B
an astronaut
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C
light
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D
a star
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Similar questions
Q.
One light year is the distance that ___ travels in a year.
Q.
Assertion :A light-year is a distance that light travels with velocity of
3
×
10
8
m
s
−
1
in one year. Reason: Light year is the unit for measuring time.
Q.
Why is the distance between stars expressed in light years ? What do you understand by the statement that a star is eight light years away from the earth
Q.
What is the distance that light travels in one year called?
Q.
Question no 4. If the velocity of light is 3.0
×
10
8
metres per second, calculate the distance travelled by light in a light year and express it in standard form.
[Hint: One light year = Distance travelled by light in a year.]
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