JEE PHYSICS UNIT 16
QUIZ NO 1
TOTAL QUESTIONS = 20


1. The speed of light is maximum in


2. The refractive index of a medium depends on


3. Which phenomenon is responsible for the twinkling of stars?


4. The power of a lens is -2D. It means the lens is


5. In Young's double-slit experiment, the fringe width decreases if


6. In a plane mirror, the image formed is


7. Which of the following is a condition for total internal reflection?


8. The focal length of a convex lens is 20 cm. Its power is


9. The splitting of white light into its component colors is called


10. When light passes through a prism, it bends towards


11. The magnification of a plane mirror is


12. The resolving power of a microscope increases with


13. A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material of the lens is


14. The critical angle for a medium is 45°. The refractive index of the medium is


15. Huygens' principle explains


16. In diffraction, the central maximum is


17. The wavelength of light used in a double-slit experiment is doubled. The fringe width will


18. The optical instrument that uses total internal reflection is


19. Which phenomenon of light does not support the wave nature of light?


20. The angle of deviation is minimum when light passes through a prism



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