Spot the false statement

Exercise and reference answers

Questions

1. False statement

   The fields lie along the direction of travel

   Statements

   1. The two fields are perpendicular to each other
   2. Accelerated charges radiate these waves
   3. The fields lie along the direction of travel

2. False statement

   Only a steady current can make a magnetic field

   Statements

   1. Only a steady current can make a magnetic field
   2. A time-varying electric field makes a magnetic field
   3. Maxwell proposed the displacement current

3. False statement

   Gamma rays sit at the long end of the spectrum

   Statements

   1. Hertz demonstrated the waves in 1885
   2. Gamma rays sit at the long end of the spectrum
   3. Marconi put them to use in communication

4. False statement

   Infrared cools the earth below its average

   Statements

   1. Microwave ovens match the resonance of water
   2. The ozone layer absorbs most ultraviolet
   3. Infrared cools the earth below its average

Instructions

Two statements are true and one is false. Tap the false one.

Explanation