GCSE Physics (P7) Flashcards on GCSE Physics P7 (OCR) - Light, Telescopes, and Images, created by Josh Price on 04/23/2015.
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Created by Josh Price
about 9 years ago
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What is the speed of waves affected by?
How does refraction lead to the formation of an image by a convex/converging lense?
Will a more powerful lens have a curvy surface of a less curvy surface?
What is the equation for calculating the power (in dioptres) of a lens?
Why does light from astronomical objects reach Earth as effectively parallel sets of rays?
What are the features of a simple optical telescope?
What are the optical elements of a telescope?
What is the equation for calculating the angular magnification of a telescope?
Why do most astronomical telescopes have concave mirrors, not converging lenses, as their objectives?
How do concave mirrors bring a parallel beam of light to a focus?
Why are large telescopes needed to collect weak radiation from very distant sources?
What is diffraction?
How can diffraction be increased?
Why does the aperture of a telescope have to be very large?
How can a spectrum be produced by refraction in a prism?
How else can a spectrum be produced?
