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

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

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

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?

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?

Which statement correctly distinguishes P-waves and S-waves produced by earthquakes?

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?

A ray of light goes from air (n ˜ 1.00) into glass (n = 1.50). If the angle of incidence is 30°, what is the angle of refraction (to nearest degree) using Snell’s law?

A seismometer records a P-wave arrival 40 s before the S-wave. Given P-wave speed = 6.0 km/s and S-wave speed = 3.5 km/s, estimate the distance to the earthquake epicentre (use ?t method).

A continuous sound source and an observer move relative to each other. Which best describes the Doppler effect?

Which statement about wave energy and amplitude is correct for exploration pulses?

Intensity I of a wave is proportional to which combination of wave properties?