Question no 4. If the velocity of light is 3.0 $\times 10^{8}$ 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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Solution

Dear Student
$d i s \tan c e t r a v e l l e d b y l i g h t i n y e a r = 31536000 \times v e l o c i t y o f l i g h t = 94608000 \times 10^{8} m a s t h e r e a r e 31536000 s e c o n d s i n a y e a r . R E G A R D S$

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Q. Assertion :A light-year is a distance that light travels with velocity of

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Question no 4. If the velocity of light is 3.0×108 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.]

Dear Student distance travelled by light in year=31536000×velocity of light=94608000×108mas there are 31536000 seconds in a year.REGARDS

Question no 4. If the velocity of light is 3.0 $\times 10^{8}$ 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.]

Dear Student
$d i s \tan c e t r a v e l l e d b y l i g h t i n y e a r = 31536000 \times v e l o c i t y o f l i g h t = 94608000 \times 10^{8} m a s t h e r e a r e 31536000 s e c o n d s i n a y e a r . R E G A R D S$