DP Physics (first assessment 2025)

Test builder »

Question 21N.1A.SL.TZ0.30

Select a Test
Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.1A.SL.TZ0.30
Level SL Paper 1A Time zone TZ0
Command term Question number 30 Adapted from N/A
30.
[Maximum mark: 1]
21N.1A.SL.TZ0.30

Which is correct for a black-body radiator?


A.  The power it emits from a unit surface area depends on the temperature only.

B.  It has an albedo of 1.

C.  It emits monochromatic radiation whose wavelength depends on the temperature only.

D.  It emits radiation of equal intensity at all wavelengths.

[1]

Markscheme

A

Syllabus sections