Question

Which equality relates AE to the distance advanced by the wavefront from B to C?

पर्याय

• \[AE=BC=\tau/v\]

• \[AE=BC=v\tau\]

• \[AE=BC=v/\tau\]

• \[AE=BC=v+\tau\]

Answer 1

AE is a radius of the sphere drawn from A, while BC is the distance advanced in time \[\tau\]. Both equal \[v\tau\].