Q1. The velocity of light is maximum in a medium of...........?
Q2. A light of wavelength 320nm enters in a medium of refractive index 1.6 from the air of refractive index 1.0. The new
wave length of light in the medium will be........nm.
Q3. "Bhautik" runs towards a plane mirror with a speed of 20 ms-1, what is the speed of his image ?
(A) 45 ms-1
(B) 20 ms-1
(C) 15 ms-2
(D) 7.5 ms-1
Q4. A ray of light is incident at an angle 30deg on a mirror, The angle between normal and reflected ray is.........
Q5. The no. of images formed between two parallel plane mirror are ..............
Q6. To get five images of a single object one shold have two plane mirrors at an angle of ................
Q7. If a glass rod is immersed in a liquid of the same refractive index, then it will ..............
(A) appear bent
(B) appear longer
(D) appear shorter
Q8. For four different transperent medium n41 × n32 × n21 = ..................
Q9. A plane mirror produces a magnification of ..........
Q10. A convex lens forms a real image of an object for its two different position on a screen if hight of the image in both cases be 16 cm and 4 cm then height of the object is ........ cm.
(Ans 1.) D
(Ans 2.) C
(Ans 3.) B
(Ans 4.) D
(Ans 5.) A
(Ans 6.) B
(Ans 7.) C
(Ans 8.) D
(Ans 9.) B
(Ans 10.) D
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