Ray Optics (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 1  6 of 105
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Question number: 1
» Ray Optics » Power of a Lens
Question
The plane surface of a Planoconvex lens is silvered If radius of curved surface is R and refractive index is µ, then the system behaves like a concave mirror whose radius will be,
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 2
» Ray Optics » Total Internal Reflection
Question
A glass prism is dipped in water as shown in figure. A light ray is incident normally on the surface AB. It reaches the surface BC after T. I. R
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 

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Question number: 3
» Ray Optics » Magnification
Question
An object of length 1 cm is placed at a distance of 15 cm from a concave mirror of focal length 10 cm. The nature and size of the image are,
Choices
Choice (4)  Response  

a.  Real, inverted, 2.0 cm 

b.  Virtual, erect, 1.0 cm 

c.  Real, inverted, 1.0 cm 

d.  Virtual, erect, 0.5 cm 

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Passage
Read the passage given below and answer the questions that follow:
A cylindrical tube filled with water is closed at its both ends by two silvered Plano convex lenses as shown in the figure. Refractive index of lenses L _{1} and L _{2} are 2.0 and 1.5 while their radii of curvature are 5 cm and 9 cm respectively. A point object is placed somewhere at a point O on the axis of cylindrical tube. It is found that the object and image coincide each other.
Question number: 4 (1 of 3 Based on Passage) Show Passage
» Ray Optics » Lens Maker's Formula and Lens Formula
Question
The length of the cylindrical tube is
Choices
Choice (4)  Response  

a.  20 cm 

b.  18 cm 

c.  22 cm 

d.  16 cm 

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Question number: 5 (2 of 3 Based on Passage) Show Passage
» Ray Optics » Lens Maker's Formula and Lens Formula
Question
The position of object w. r. t lens L _{1} is
Choices
Choice (4)  Response  

a.  10 cm 

b.  12 cm 

c.  8 cm 

d.  14 cm 

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Question number: 6 (3 of 3 Based on Passage) Show Passage
» Ray Optics » Lens Maker's Formula and Lens Formula
Question
The position of object w. r. t lens L _{2} is
Choices
Choice (4)  Response  

a.  14 cm 

b.  10 cm 

c.  8 cm 

d.  12 cm 

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