BO/I/03
Professional Course Examination, November 2018
1st Semester
BACHELOR OF OPTOMETRY
Paper III
Geometrical Optics—I
Full Marks 40
Pass Marks 20
Time 2 hours
The figures in the margin indicate full marks for the questions
Answer any eight questions
1. What are the units for specifying power of a prism? Explain. 5
2. Derive mirror equation. 5
3. Define lenses. Explain with diagram sign convention of lens. 5
4. Describe reflection of light. Write its type. 5
5. Explain Prentice's rule. Write its application. 5
6. What are the types of lens? Explain the cardinal points of a lens. 5
/393 1 Contd.
7. Explain vergence. Illustrate with diagram the types of vergence. 5
8. List out the properties of light. 5
9. Define the following 1×5=5
Snell's law
Back vertex power
Refractive index
Sagittal depth
Radiant flux
10. Define the following 1×5=5
Abbe number
Crown glass
Dispersive power of a prism
Diopter
Meniscus lens