To get a sharp image on the screen, there are various methods and concepts that you have learned and can be applied here. View the video for the explanation:

Answer: Option A For such questions, always locate accurately the position of the image of the O. Then draw the ray from the image to the...

Answer: Option D For total internal reflection TIR to occur, two conditions must be present: 1. light must be travelling from a optically...

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

Examples of reflection ray diagrams covered in the video.

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...

Answer: Option B

Drawing ray diagrams for converging lens come in many forms. But the basic concepts needed are the 3 rays (which have rules to follow) to...

Which of the following light rays behaves correctly when it passes through the converging lens? Solutions: Option C Recall these basic...

Overview of Total Internal Reflection (TIR) Explanation of the various stages:

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...

Light and sound are both waves. So both carry energy from one place to another. Light , which is part of the electromagnetic spectrum,...

To do similar questions, it is important to know the 3 rays which have rules to follow in order to locate the image. Look through the...

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

Answer: Option C Focal length f is the distance between the focal point and the centre of the lens (optical centre) . Note that only...

Solutions: a) Refraction     b) 48.6o     c) c = 41.8o     e) 70o d) Total internal reflection has occured, as the angle of incidence is...

1. Converging lens (convex lens) Converging lens, also known as convex lens,  is thicker at the centre. Below shows some examples. In...

Drawing ray diagrams for converging lens come in many forms. But the basic concepts needed are the 3 rays (which have rules to follow) to...

A pin in the beaker of water appears higher than its actual position due to refraction of light. In this experiment, you have to adjust...