Question

12. Real images formed by a curved mirror are always A) on the side of the mirror opposite the object B) on the same side of the mirror as the object and closer to the mirror than the object C) on the same side of the mirror as the object and upright D) on the same side of the mirror as the object and further from the mirror than the focal poi 13. Aray of light passes from, air into water, striking the surface of the water with an ange of edence 45 Which of the following four quantities change as the light enters the water wavelength, (2) frequency, (3) speed of propagation, and (4) direction of propagation? A) B) C) D) 1 and 3 only 1,2,3, and4 1,3, and 4 only 2,3, and 4 only nt are moved closer together, the fringes 14. When the slits in Young's experime A) remain unchanged. B) move closer together. C) move further apart D) are less intense. 15. An erect object is in front of a curved, convex mirror a distance greater than the focal lenh The image is: real, inverted, and smaller than the object real, inverted, and larger than the object virtual, erect, and smaller than the object virtual, erect, and larger than the object A) B) C) D) 16. When a parallel beam of light is diffracted while passing through a single slit, A) the shadow is always sharp. B) the narrower the slit, the narrower the central diffraction maximum. C) the narrower the slit, the wider the central diffraction maximum. D) the width of the central diffraction maximum is independent of the width of the slit.

Answer 1

12 Option (d) is correct

13 Option (c) is correct because frequency only depends on the source

14 Option (b) is correct because fringe is directly proportional to distance between screen and slit

15 Option (c) is correct

16 Option (c) is correct