Q1. The power of plane glass is .................
Q2. If thin prism of 5deg gives a deviation of 2deg then, the refractive index of material of prism is ..............
Q3. It is difficult to see through the fog because ..........
(A) light is seattered by the doplets in the fog.
(B) fog absorbs light
(C) refractive index of fog is infinity
(D) light suffers total internal reffection.
Q4. What is the time taken in seconds to cross a glass plate of
thickness 6 mm and = 2.0 by light ?
(A) 8 * 10-11
(B) 4 * 10-11
(C) 2 * 1011
(D) 16 * 10-11
Q5. Read the following questions and choose if ..........
(A) both assertion and reason are true and the reason is correct explanation of the assertion.
(B) bothh assertion and reason are true but reason do not explain the assertion.
(C) Assertion is true but the reason are false
(D) Both assertion and reason are false
(1) Assertion : Focal length of a lense for red colour is smaller than its focal length for violet colour
Reason : is because nr > nV
Q6. In which of the following cases a man will not see image
grater than himself.
(A) Convex mirror
(B) concave mirror
(C) Plane mirror
(D) none of these
Q7. A glass slab (n = 1.5) of thickness 9 cm is placed over a written paper what is the shift in the latters ?
Q8. A concave mirror of focal length 20 cm forms an virtual image having twice the linear dimensions of the object, the position of the object will be ....... cm
Q9. A mark at the bottom of the liquid appears to rise by 0.2m,If depth the liquid is 2.0m then refractive index of the liquid is ..............
Q10. 1.6 is a refractive index of plane-convex lense, the radius of curvature of the curved surface is 60 cm. The focal lenght of the lense is ........... cm
(Ans 1.) B
(Ans 2.) A
(Ans 3.) A
(Ans 4.) B
(Ans 5.) D
(Ans 6.) A
(Ans 7.) B
(Ans 8.) C
(Ans 9.) D
(Ans 10.) B
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