Waves For Detection And Exploration (physics Only) (ht Only) (GCSE Physics)

Why are higher frequencies (shorter wavelengths) sometimes NOT used for very deep seismic exploration?

A naval sonar emits a 20 kHz pulse and listens for the echo. If the sea sound speed is 1500 m/s, what is the wavelength of the sonar pulse?

Which of the following correctly describes a transverse wave?

A radar pulse is used to measure the distance to a metal ship. If the pulse round-trip time is 2.0 × 10^-3 s and the speed of microwaves is 3.0 × 10^8 m/s, what is the distance to the ship?

A subsurface feature is detected by reflected waves arriving later than expected. Which change in the medium most likely causes the reflection arrival to be delayed?

Why does refraction not occur when a ray strikes a rectangular glass block at normal incidence?

A spacecraft uses radio ranging: if signal frequency is 2.4 GHz and the spacecraft moves away at 3.0 km/s, which effect shifts the received frequency and how?

A seismic P-wave travels 8.0 km in 1.0 s. What is its speed and what type of motion is it?

A plane wavefront crosses from air to glass at an angle. In terms of wavefronts, why does the beam refract at the boundary?

A wave has frequency 2.5 kHz and wavelength 0.20 m. What is its speed?

In a time-of-flight LIDAR measurement, a laser pulse returns from a target in 6.67 × 10^-6 s. If light speed is 3.0 × 10^8 m/s, what is the target distance?