Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. WAEC
  4. /
  5. Physics
  6. /
  7. 1990
  8. /
  9. Q33
Question 33Question image

The diagram above shows an incident ray A, inclined at angle of 50o to the interface CB. The ray OB is found to lie along the surface. What is the refractive index of the medium X with respect to air?

  • A.sin50o/sin40o
  • B.sin40osin50o
  • C.sin90o/sin50o
  • D.sin40o/sin90o
  • E.sin90o/sin40o
Objective

Question details

Exam body
WAEC
Subject
Physics
Year
1990
Question no.
#33
Type
Objective
Previous · Q32The diagram above shows an incident ray A, inclined at angle of 50 o to the… Next · Q34 The eye defect illustrated by the diagram above is

More from this paper

  • Q29A concave mirror of radius of curvature 20cm has a pin placed at 15cm from its…
  • Q30Where will the image of the object OB shown in the diagram above be located…
  • Q31A parallel beam of light is to be obtained from the headlamp ofa car. At which…
  • Q35The eye defect illustrated by the diagram above is
  • Q36A simple microscope forms an image twice the size of the object. If the focal…
  • Q37Which of the following pairs of light rays shows the widest separation in the…
See all Physics 1990 questions
Teacha

Africa's learning & exam readiness platform. Built for students, tutors, and schools.

Platform

  • Courses
  • Mock Exams
  • Past Questions

For You

  • I'm a Tutor
  • I'm a School
  • Pricing

© 2025 Teacha. Built for African learners, tutors, and schools. Teacha is not affiliated with WAEC, NECO, or JAMB. All past questions are sourced from publicly available materials.

Privacy PolicyTerms of UseCookie Policy