Concept of Light Year

Q.

Light year is a unit of:

1. time

2. distance

3. speed

4. temperature

Q. What is the distance of the galaxy MACSO647-JD from the planet Earth?

1. 144.4 billion light years
2. 3.1 billion light years
3. 13.3 billion light years
4. 4.7 billion light years

Q. One light year, a unit of length, is equal to how many kilometers? (approximate)

1. ${10}^6\text{km}$
2. ${10}^9\text{km}$
3. ${10}^{12}\text{km}$
4. ${10}^{13}\text{km}$

Q. Light year is a unit of .

1. time
2. speed
3. distance
4. light intensity

Q. The time taken by a star to come back to its exact previous position in the night sky, every next night is known as

1. sidereal day
2. solar day
3. zodiacal duration
4. light year

Q. Choose the units of length.

1. Foot
2. Kilometre
3. Metre
4. Gram
5. Second
6. Millimetre
7. Pound
8. Centimetre

Q.

The definition of "distance traveled by light through space in one year" best fits which science term?

1. Light-Year

2. Tropical storm

3. Evolution

4. Groundwater

Q. One light year is the distance that ___ travels in a year.

1. earth
2. an astronaut
3. light
4. a star