MCQ Series 46: optometry and Ophthalmogy MCQ test series
1.If undilated retinoscopy is done at a distance of 1/2m, Distance correction needed is
3. Total internal reflection occurs if the incident ray strikes the interface of media at:
6. lmage magnification in direct ophthalmoscopy
9. Visual field is smallest for which colour
1.If undilated retinoscopy is done at a distance of 1/2m, Distance correction needed is
A. 0.5 D
B. 1.0 D
C. 1.5 D
D. 2.0 D
2. An object located between the centre of curvature and principal
focus of a concave mirror is:
A. Diminished
B.Virtual
C. Erect
D. Real
3. Total internal reflection occurs if the incident ray strikes the interface of media at:
A. An angle less than the critical angle
B. The critical angle
C. An angle greater than the critical angle
D. 90 degrees
4. The image of an object formed by reflection at a plane surface is not:
A. Erect
B. Virtual
C. Real
D. Laterally inverted
5. Which colour of light deviates maximum in the dispersion of white light by prism?
A. Violet
B. Blue
C. Green
D. Red
6. lmage magnification in direct ophthalmoscopy
A. 5 times
B. 10 times
C. 15 times
D. 20 times
7. In direct ophthalmoscopy the image in a myopic eye is
A. Smaller
B. Bigger
C. Same size
D. Any of the above
8. How much angle should each letter substend at the nodal point of the eye at the given distance in the snellen's chart
A. 1 minutes
B. 5 minutes
C. 1 degrees
D. 5 degrees
9. Visual field is smallest for which colour
A. Blue
B. Green
C. Red
D. White
10. Visual field is largest for which colour
A. Blue
B. Green
C. Red
D. White
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