Photochromic materials change colour in response to changes in what?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Get ready for the IGCSE Design and Technology (DT) exam with our comprehensive quiz. Study with multiple choice questions and detailed explanations to boost your confidence and ace your test!

Multiple Choice

Photochromic materials change colour in response to changes in what?

Explanation:
Photochromic materials respond to light exposure by changing colour. Their molecules undergo a reversible change when they absorb light, especially ultraviolet light, so in bright conditions they darken and in dim conditions they return to their original colour. They don’t rely on temperature, sound, or magnetic fields to trigger the colour change, which is why light levels are the correct cause.

Photochromic materials respond to light exposure by changing colour. Their molecules undergo a reversible change when they absorb light, especially ultraviolet light, so in bright conditions they darken and in dim conditions they return to their original colour. They don’t rely on temperature, sound, or magnetic fields to trigger the colour change, which is why light levels are the correct cause.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy