9-1 Topic 5 Electromagnetic Wave
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» 9-1 Topic 5 Electromagnetic Wave
Which of these is correct for the light as it enters the glass shown at P?
The image produced in the following diagram is real because it is
On a screen
With reference to the previous diagram. The light that travels from the stars transfers
The distance X in the following diagram is the:
the focal length
the object distance
the eyepiece distance
The critical angle for glass in air is 42°. Which of these diagrams shows the ray of light after it meets the boundary between glass and air?
Ritter, discovered ultraviolet radiation. Too much exposure to ultraviolet radiation may cause
heating of internal body cells
damage to the eyes
damage to the bone cells
Three signals, ultraviolet, visible light and infrared, are sent from the surface of the Moon to an orbiting spacecraft. The three signals are sent at the same time. Which of these is correct for the signals arriving at the spacecraft?
the visible light signal arrives first
the ultraviolet signal arrives first
the infrared signal arrives first
all three signals arrive at the same time
An endoscope uses glass fibres to enable doctors to 'see' inside a person. Rays of light travel along the glass fibres by
total internal correction
total internal diffraction
total internal reflection
total internal refraction
A wind generator is used as the source of energy for a remote farmhouse. If the farmhouse is about 7 m high, the height of the axle of the generator is
Galileo was one of the first scientists to use a telescope to study Venus. Which of these diagrams best shows how light waves enable us to see Venus?
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