Physics Class 10 Chapter 14: Optics

Premium chapter

• Class 10
• Physics
• Unit 14
• Book pages 121-158
• FBISE SSC-II

Chapter summary

Chapter 14 of Physics for Class 10 is called "Optics". It covers 23 learning outcomes of the Federal Board syllabus. You will learn to: define and use the terms normal, angle of incidence and angle of Reflection.; describe an experiment to find the position and characteristics of an optical image formed. Parhayi.com has 248 MCQs, 51 short questions and 26 long questions for this chapter.

Topics in this chapter

• Define and use the terms normal, angle of incidence and angle of Reflection.
• Describe an experiment to find the position and characteristics of an optical image formed…
• Use the laws of reflection to solve simple optical problems.
• Define the terms normal, angle of incidence and angle of refraction.
• Apply the qualitative principle that a wave refracts towards the normal when it slows down…
• Define and use the refractive index from a vacuum to a medium for light as c/v.
• Define refractive index n as n= sin(i)/sin(r). Apply Snell’s law, ni sin (i) = nr sin (r)…
• Define the terms critical angle and total internal reflection.
• Derive the equation n = 1/sin (c).
• Apply the equation n = 1/sin (c) to solve simple problems.
• Describe experiments to show internal reflection and total internal reflection.
• Evaluate and illustrate the use of optical fibers
• Analyze the action of thin converging and thin diverging lenses on a parallel beam of light.
• Define and use the terms focal length, principal axis and principal focus (focal point)
• Draw ray diagrams to illustrate the formation of real and virtual images of an object by a…
• Differentiate between real and virtual images.
• Define and calculate linear magnification
• Describe the use of a single lens a magnifying glass.
• Explain the dispersion of light by a prism.
• State the traditional seven colors of the visible spectrum in order of frequency and in…
• Draw ray diagrams to show the formation of images in the normal eye, a short-sighted eye…
• Describe the use of converging and diverging lenses to correct long-sightedness and…
• Mixed topics

Sample questions

Try these questions from the chapter. The answers are for Premium students.

1. Why is the refractive index always greater than or equal to unity? (3 marks)
2. What is refractive index? Calculate the refractive index of a medium if the speed of light in it is 2 × 10⁸ m/s. (3 marks)
3. A ray of light passes from glass (n = 1.5) into air. If the angle of incidence is 30°, find the angle of refraction. (3 marks)

What Premium gives you in this chapter

• 248 MCQs with answers and explanations
• 51 short questions with full answers
• 26 long questions with answers
• 13 Learn cards
• 38 Activities and games
• chapter tests that show your weak topics

Physics explains how the world works, from motion and forces to heat, light and magnets. Learn each idea in simple steps, check the units, and practise numericals every day.