Chapter Nine: Ray Optics and Optical Instruments
A worksheet based on Chapter 9 of the textbook, covering reflection, refraction, spherical mirrors, lenses, and the principles of optical instruments. Total: 40 marks.
Section A: Fill in the Blanks [20 Marks]
Complete the following statements with the correct word or phrase.
Electromagnetic radiation in the wavelength range of about 400 nm to ________ is called light.
The presently accepted value for the speed of light in a vacuum is approximately ________.
The path of light is called a ________, and a bundle of such paths is called a beam.
According to the law of reflection, the angle of incidence equals the angle of ________.
The geometric centre of a spherical mirror is called its ________.
Section B: Multiple Choice Questions [20 Marks]
Choose the single correct answer for each question.