Question

3. The speed of light in vacuum is 3 x 10% m/s. Sunlight takes about 8 minutes to reach the Earth. Express distance of Sun from Earth in standard form. ​

Answer 1

Answer:

It is given that speed of light in vacuum is 3×10^8 m/s and time taken by it to reach the Earth is 8 minutes.

First convert 8 minutes into seconds -

8×60 = 480 seconds

Now, use formula Speed = Distance/Time to calculate the required distance.

$3 \times {10}^{8} \times 480 = distance \\ 144 \times {10}^{9} = distance$

Standard form of an exponent is a × 10^n ; a is a non-terminating decimal and n is an integer.

$1.44 \times {10}^{11}m \: is \: the \: required \: distance$

Hope it helped you...

Thank you !!!!