Scottish National 5 Light — practice questions
28 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice Scottish National 5 Light in the app →Visible light is only one narrow band within a much bigger family of radiation. What is that family called?What actually generates electromagnetic radiation in the first place?An oscillating current radiates an electromagnetic wave. How are its electric field and magnetic field orienteIn wave language, what name is given to the distance between two successive wave crests?How is the frequency of a wave defined?What does the amplitude of a wave measure?Moving across the electromagnetic spectrum from radio waves toward gamma rays, frequency climbs steadily. WhatWhy can gamma rays pass through materials that stop visible light completely?James Clerk Maxwell, credited with formulating a complete electromagnetic theory, is described using which terMaxwell's equations are given only in words rather than in symbols. Why?According to Maxwell's equations, how do magnetic field lines differ from electric field lines in where they sWithin the narrow visible band, how do red light and violet light compare in frequency?Where do infrared and ultraviolet radiation sit relative to the visible band?How do astronomers and radar operators both use a frequency shift to learn about a moving object?How does microwave radiation heat food inside a microwave oven?How many kinds of colour-sensing cone cells does the human eye have?Dogs have only two kinds of cone cells rather than three. What does this mean for their colour vision?In a vacuum, at what speed does electromagnetic radiation of every frequency travel?Sunlight, starlight from the nearest star, and light from the nearest galaxy all take different times to reachLight passing through water, air and diamond all travel slower than light in a vacuum. Ranked from fastest to What happens to a light ray's direction when it changes speed while crossing a boundary between two media?Soap bubbles show bands of rainbow colour on their surface. What produces this effect?What name is given to light whose electric field vibrates in only one direction rather than in every directionPolarized sunglasses cut down glare from a lake. How do the lenses achieve this?A photographer measures 39.8 lux from a 2,000 lumen bulb held 2.00 m away, using illuminance equals P over 4 pOne light year is the distance light travels in one year. What is that distance in kilometres?For yellow light with a wavelength of 6.00 x 10^-7 m, what frequency does c equals f times lambda give, using What quantity is measured in lux and describes how many lumens fall on each square metre of a surface?