B: infrared rays
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A semi-circular block is made from a plastic. A ray of light passes through it at the angles shown. To two decimal pl…
Convex lenses are used in cameras and as magnifying glasses. Which types of image are formed?
A ray of light strikes a plane mirror and is reflected. Which pair of angles must be equal in value?
Which of the following is equivalent to 1 V?
The electrical resistance of a metal wire varies with temperature as shown. The resistance of the wire at 0°C is 1.00…
A cell is connected in series with an ammeter and a lamp. The reading on the ammeter is 1 A. In which circuit, using …