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Standard XII
Chemistry
Units and Dimensions
Light year is...
Question
Light year is a unit for measurement of
A
age of universe
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B
very small time intervals
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C
very high temperature
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D
very large distance
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Solution
The correct option is
D
very large distance
Light year is a unit for measurement of
very large distance.
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Similar questions
Q.
One light year is used for measurement of large distances?
Q.
Statement 1: Light year is a unit of time.
Statement 2: Distance between two stars can be measured in light years.
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.
Assertion (A)
: Light year is the unit of time.
Reason (R): Light year is the distance travelled by light in vacuum in one year.
Q.
The units used to measure large distances are:
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