# Physics Karachi Board XI [Lenses] Online Test 2

## Physics XI Karachi Board [Lenses] MCQS Online Test - 2

Physics Aptitude Test. 17 More Questions from Chapter 10 Lenses.
Q1. A Galilean telescope consist of
Q2. A spectrometer is used for a careful study of
Q3. If the object and Its image are collected at a distance of 5 cm from the focus of convex lens. The focal length of the lens will be
Q4. The ratio of the size of image to the size of the object is called
Q5. Least distance of distinct vision is about
Q6. Total internal reflection occurs when the incident angle is
Q7. The minimum distance from the eye at which an object appears to be distinct is called
Q8. Eye-piece of a compound microscope acts as
Q9. Whenever high magnification is desired
Q10. In compound microscope, the focal length of objective is
Q11. In telescopes we use eye-piece which has focal length
Q12. The scientist who correctly measured the velocity of light was
Q13. The speed at which light enters into a material depends upon
Q14. An object Is placed at a distance of 1.5 m from a convex lens of focal length 2m. its image will be
Q15. The minimum distance between an object and its real image in a convex lens is
Q16. The image formed by a convex lens of focal length 10 cm is twice the size of the object. The position of object will be
Q17. Light rays after passing through a concave lens
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