Share Facebook Email Telegram WhatsApp Results #1. The materials through which objects can be seen but not clearly are called ________ materials. Translucent Translucent Transparent Transparent Opaque Opaque Lustre Lustre #2. The focal length of the lens of a normal human eye is about______. 25 cm 25 cm 1 m 1 m 2.5 mm 2.5 mm 2.5 cm 2.5 cm #3. The deviation angle is the lowest _____. Purple Purple Yellow Yellow Blue Blue Red Red #4. Which of the following lens is used to minimize Myopia? Convex lens Convex lens Concave lens Concave lens Cylindrical lens Cylindrical lens None of the above None of the above #5. A concave lens always forms ____. A real image A real image A virtual image A virtual image An image type which depends on object characteristics An image type which depends on object characteristics An image type which depends on lens curvature An image type which depends on lens curvature #6. Light enters the eye through a thin membrane called _____. Retina Retina Cornea Cornea Pupil Pupil Iris Iris #7. For the myopic eye, the defect is cured by _____. Convex lens Convex lens Concave lens Concave lens Cylindrical lens Cylindrical lens Toric lens Toric lens #8. The optical phenomenon that is responsible for the propagation of light signal through an optical fibre is ________. Interference Interference Scattering Scattering Total internal reflection Total internal reflection Refraction Refraction #9. The ability of a medium to reflect light is also expressed by its _______. Field density Field density Light density Light density Surface density Surface density Mass density Mass density #10. The sun is seen little before it rises and for a short while after it sets. This is because of ________. Total internal reflection Total internal reflection Atmospheric refraction Atmospheric refraction Apparent shift in the direction of sun Apparent shift in the direction of sun Dispersion Dispersion Finish
