Question

3. One light year is :
(a) 9.46 x 1012 km (b) 9.64 x 1012 km
(c) 94.6 x 1012 km (d) 96.4 x 1012 km
4. A standard unit should :
(a) be convenient in size
(b) not change with change in place
(c) not change with time
(d) All of these​

Answer 1

Answer:

3.a

4.c

Explanation:

3.The light-year is a unit of length used to express astronomical distances and measures about 9.46 trillion kilometres (9.46 x 1012 km) or 5.88 trillion miles (5.88 x 1012 mi).

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Answer 2

Answer:

9.46 × 1012 km Is Right Answer.