Scottish National 5 Mirrors and Lenses — practice questions
68 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice Scottish National 5 Mirrors and Lenses in the app →What does the law of reflection say about the angle of reflection and the angle of incidence, both measured frA sheet of paper can be read from almost any angle in a lit room, while a mirror only shows a bright reflectioWhy does a smooth mirror show a bright reflection from only one viewing direction?Standing in front of a flat mirror, how far behind the mirror does your image appear to sit compared with how How is a virtual image formed, according to the description of a flat mirror image?A mirror that curves inward, like the bowl of a spoon, and one that curves outward, like the back of the same In diagrams of mirrors and lenses, what is meant by the central axis?Using the sign convention for curved mirrors, what sign does the focal length carry for a concave mirror, and For any object placed on the far side of a concave mirror's focal point, what kind of image is formed?A convex mirror is used as a security mirror in a shop. What kind of image does a convex mirror always form?The radius of curvature R of a curved mirror relates to its focal length f in a very simple way. What is that A concave mirror has a focal length of 15 cm. Using R equals twice f, what is its radius of curvature?A person stands 6.0 m from a convex security mirror and sees a virtual image that appears to be 1.0 m behind tAn electric room heater uses a concave mirror with a radius of curvature of 50.0 cm to project a real image ofA concave mirror has a radius of curvature of 0.8 m. Using f equals R over 2, what is its focal length?A makeup mirror produces a magnification of 1.50 when a person's face is 12.0 cm away. Since the image is upriA concave mirror has a focal length of 5.00 cm. Using the mirror equation, what is the image distance for an oAn 8.0 cm tall object sits 6.0 cm from a concave mirror that produces a magnification of -2.0. Using m equals A mirror is polished with coarse sandpaper instead of a fine one. Using the law of reflection, what happens toWhat is refraction?Looking into a fish tank, the same fish can appear to be in two different places at once. What causes this?Why is the speed of light in a vacuum treated as one of the basic fixed physical quantities?The index of refraction n of a material is defined using which ratio?In every table of refractive indices, which materials show the slowest light speed?In a worked example, the table gives water's index of refraction as 1.333. Using n equals c over v with c equaThe refractive index of ethanol is 1.36. Using v equals c over n, what is the speed of light in ethanol?What mathematical relationship is Snell's law, describing how a ray bends at a boundary between two media?What is dispersion, as the term is used for a prism splitting white light?Rainbows form in the sky through which combination of optical effects?A good-quality mirror is said to reflect what fraction of the light that falls on it?What is the critical angle for a boundary between two materials?What condition must hold between two materials for total internal reflection to be possible at all?Diamond has a critical angle of only 24.4 degrees at its surface with air. How does this explain why a diamondCorner reflectors, such as the reflective buttons on a bicycle, are built from two mutually perpendicular reflOne use of corner reflectors relying on total internal reflection is mentioned for which optical instrument?Fiber optic cables carry telephone, internet and cable TV signals by relying on which optical effect inside thA medical endoscope sends light down a flexible tube to let a doctor see inside a hollow organ. What does the The speed of light in a certain solid is measured as 2.012 x 10^8 m/s. Using n equals c over v with c equals 3Light travels from water, with index 1.333, into an unknown substance. The incident angle is 45.00 degrees andUsing n1 equals 1.333 for water and n2 equals 1.0003 for air, what critical angle does theta_c equals the inveThe refractive index of air is 1.0003 and the refractive index of crystalline quartz is 1.544. What is the criA convex lens brings parallel rays entering it to a single crossing point on the far side. What is such a lensA concave lens causes parallel rays entering it to spread apart rather than cross. What is such a lens called?What sign does the focal length of a diverging lens carry, by the stated convention?The power P of a lens is defined in terms of its focal length f. What is that relationship, and in what unit iA diverging lens has a negative focal length. What sign does its power then carry?Which of these is one of the standard ray-tracing rules for a converging lens?According to the ray-tracing rules, what happens to a ray that passes through the exact centre of either a conAccording to the sign conventions carried over from mirrors, what does a negative image distance d_i tell you What is an aberration, in the context of a real lens forming an image?Chromatic aberration causes different colours of light to focus at different points through the same lens. WhaWhy do telescopes built entirely from curved mirrors avoid the chromatic aberration problem that lens-based teAn achromatic doublet reduces chromatic aberration by combining which two lens types?The cornea and lens of the human eye are described as acting together in what way?Which part of the retina has the greatest density of light receptors and gives the sharpest vision?Why is there a blind spot in the human eye?Between the cornea and the lens of the eye, which one provides most of the eye's total magnification?What is myopia, or nearsightedness, in terms of what a person can and cannot see clearly?What is hyperopia, or farsightedness, in terms of what a person can and cannot see clearly?What kind of spectacle lens corrects nearsightedness, and how does it help?What kind of spectacle lens corrects farsightedness, and how does it help?The thin-lens equation used for lenses is the same equation used earlier for curved mirrors. Is a separate setSunlight is focused by a magnifying glass to a bright spot 8.00 cm from the lens. Using P equals 1 over f, whaA lens has a focal length of 12.5 cm. Using P equals 1 over f, what is its power?A light bulb sits 0.75 m from a convex lens with a 0.50 m focal length. Using d_i equals f d_o over (d_o minusA book page is held 6.50 cm from a concave lens whose focal length is -10.0 cm. Using d_i equals f d_o over (dA lens produces a 5.00 cm tall image of an 8.00 cm tall object when the object is placed 10.0 cm from the lensIn an eye where the lens-to-retina distance is fixed at 2.00 cm, an object sits 50.0 cm away. Using P equals 1