N5 Physics Waves and Radiation Units and Symbols

Which of the following is the correct unit for wavelength?

• metre

• Hertz

• metres per second

• second

Which of the following is the correct unit for distance?

• metre

• Hertz

• metres per second

• second

Which of the following units is used to measure frequency?

• metre

• Hertz

• metres per second

• second

What does the symbol "T" represent?

• Time

• Period

• Wavelength

• Speed

Which of the following metric prefixes means x10^-6?

• micro

• milli

• Mega

• pico

How many millimetres in one metre?

• 100

• 1,000

• 1,000,000

• 10

Which of the following is 180 km in metres?

• 180 x 10^-3 m

• 180 x 10³ m

• 180 x 10^-6 m

• 180 x 10⁶ m

A wave with a wavelength of 350 nm has a wavelength in metres of...

• 350 x 10⁶ m

• 350 x 10^-6 m

• 350 x 10⁹ m

• 350 x 10^-9 m

The speed of sound in air is...

• 300,000,000 ms^-1

• 340 ms^-1

• 1500 ms^-1

• 5000 ms^-1

The speed of radio waves in air is...

• 3 x 10⁸ ms^-1

• 3 x 10⁶ ms^-1

• 3 x 10⁹ ms^-1

• 3 x 10¹² ms^-1