Are these statements true?
Briefly describe the 2nd statement.

Second statement is also true.​​​​​​​

• Huygens principle states that each point of a wavefront is the source of secondary wavelets (small waves) which spread in all directions with the speed of the wave.
• The new wavefront is formed by drawing a line tangent to all the wavelets.

So, the length of the tangent drawn is equal to the distance covered by wavefront in that time t.

Regards