Question

Choose the item that best fits each description:

1. EM waves in space travel

2. in an EM wave, the electrical field and magnetic field are

3. heat radiation emitted by all objects

Options are:

magnetic field interference gamma rays plane mirror perpendicular to each other created by a moving electric charge blackbody radiation a transverse wave greenhouse effect diffuse reflection X-rays specular reflection at the speed of light (c) polarization electromagnetic induction ELF Waves normal middle frequency radio waves Infrared

Loadstone

Longitudinal Wave

Answer 1

1.
EM waves in space travel

with the speed of light (c)

we call the EM waves are light waves can travel with a speed of speed of light in vacuum (space)

2. in an EM wave, the electrical field and magnetic field are

in EM wave both the Electric and Magnetic fields are perpendicular to each other and

perpendicular to the direction of propagation of the wave

3. heat radiation emitted by all objects

can be treated as black body radiation

every heated body can emit the radiation

4. load stone

load stone is of the magnetite mineral, which is natural magnetizing material

so load stone ----- Magnetic field

5. Longitudianl wave

generally in longitudinal waves , the particles vibration is in the direction of propagation of the wave

here none of the given were appropriate