🔍 Key Concepts

• Relationship between Pulse Repetition Frequency (PRF) and Pulse Repetition Interval (PRI) • Converting frequency (Hz) to time (seconds) • Converting seconds to microseconds (µs)

💭 Think About

• How are PRF and PRI related mathematically? Is PRI directly proportional or inversely proportional to PRF? • If PRF is 2500 pulses per second, how long is one pulse interval in seconds? Write it as a fraction. • Once you have the time in seconds for one interval, how do you convert that value into microseconds?

✅ Before You Answer

• Remember that 1 Hz = 1/second, so use that to get from frequency to time. • Carefully convert seconds to microseconds (1 second = 1,000,000 microseconds). • After calculating PRI in microseconds, compare your result to the choices and check that the order of magnitude (tens, hundreds, thousands of microseconds) makes sense.