As you rotate the glass block clockwise, the light will undergo refraction and emerge and cuts the like XY to the left of W. As the angle increases, the displacement of the light ray cutting on XY increases. When the angle of rotation increases, you can see that the light ray enters from the shorter edge of the glass block, and the light ray emerge out and cuts XY to the right of W. When the angle approaches 90o, the displacement from W decreases When the block is 90o, the li

Characteristics of mirror image: • virtual (an image which cannot be formed on a screen) • same size as object • laterally inverted •...

Finding the resistance of unknown resistor R

The video below shows a typical lens experiment. (reference to O-Level SciPhy 2015). I will briefly go through the set-up, main steps and...

A thin convex lens is placed on a plane mirror and an object pin is then moved along the axis of the lens until an image is seen to...

The video include 3 different light experiments which involve glass block and pins. Most students faced difficulties in locating the pins...

Depending on the experiment, the recording of measured time may be to the nearest 0.1 s or the nearest 1 s, even though a typical digital...