AQA GCSE Physics - Blackbody radiation

Which of the following statements is NOT TRUE concerning a blackbody

• It absorbs radiation of all wavelengths that fall on it

• It is a best emitter radiation

• It's radiation is also known as cavity radiation

• It reflects some radiation that falls on it

Choose the correct statement of an ideal blackbody

• Emits 100% of the light it generates, but cannot absorb its own radiation

• Absorbs half of the light incident upon it and emits half of the radiation it generates

• Absorbs all light incident on it, or emits all of the radiation it generates

• Absorbs 100% of the light incident upon it, but cannot emit light of its own

One of the colours below is associated with the lowest temperature. Which one?

• red

• blue

• green

• orange

For a perfect blackbody, the peak radiation intensity emitted by the body is

• dependent on the radiation that falls on the blackbody

• characteristic of the temperature of the blackbody

• always varying for a given temperature

• the same regardless of the temperature of the blackbody