Question

What value is given for the speed of light?

Options

• \[1.602 \times 10^{-19}\ \text{m/s}\]

• \[3 \times 10^6\ \text{m/s}\]

• \[3 \times 10^8\ \text{m/s}\]

• \[1.76 \times 10^{11}\ \text{m/s}\]

Answer 1

The speed of light is \[3 \times 10^8\ \text{m/s}\]. Cathode ray particle speeds were compared with this value.