Lenses
Quiz by nadine diab
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10 questions
Show answers
- Q1What is a lens?A type of cameraA tool that focuses light onto a sensor or film.A type of mirrorA type of filter30s
- Q2What is the purpose of a lens?To create abstract artTo block light from entering a cameraTo reflect lightTo focus light onto a sensor or film.30s
- Q3What is the focal point of a lens?The point where parallel rays of light converge or appear to convergeThe point where the lens bends the light the mostThe center point of the lensThe edge of the lens30s
- Q4What is the difference between a convex and concave lens?A convex lens curves inward and a concave lens curves outwardA convex lens is flat and a concave lens is curvedA convex lens curves outward and a concave lens curves inwardA convex lens is made of glass and a concave lens is made of plastic30s
- Q5What is the main function of a lens in a camera?To block light from entering the cameraTo add a filter to the imageTo focus light onto the image sensorTo create a blurred image30s
- Q6What happens to light rays when they pass through a convex lens?They diverge and spread outThey pass through without any changeThey reflect back off the lensThey converge to a point30s
- Q7What is the name of the optical effect caused when light is bent by a lens?DispersionAbsorptionRefractionReflection30s
- Q8What does the term 'focal length' refer to?The curvature of the lensThe distance between the lens and the focal pointThe thickness of the lensThe distance between the lens and the object being viewed30s
- Q9What is the name of the equation used to calculate the magnification of a lens?Lens equationMagnification formulaFocal length equationIndex of refraction formula30s
- Q10What is a lens made of?MetalTransparent material such as glass or plasticStoneWood30s