Ray Optics (AIIMS Physics): Questions 14  17 of 18
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Question number: 14
» Ray Optics » Deviation and Dispersion of Light by a Prism
Question
Angle of prism is 30 and its one surface is silvered. Light rays falling at an angle of incidence 60 on first surface return back through the same path after suffering reflection at second silvered surface. Refractive index of the material of prism is –
Choices
Choice (4)  Response  

a. 


b.  2 

c. 


d.  1.5 

Question number: 15
» Ray Optics » Resolving Power of Microscopes and Astronomical Telescopes
Question
A telescope has an objective lens of focal length 100 cm and an eye piece with focal length 5cm. If this telescope is used to see a 30 meter tall building at a distance of 1km, what is the height of the image of the building formed by the objective lens –
Choices
Choice (4)  Response  

a.  27 cm 

b.  3 cm 

c.  1 cm 

d.  9 cm 

Question number: 16
» Ray Optics » Resolving Power of Microscopes and Astronomical Telescopes
Question
A telescope has an objective lens of focal length 500 cm and an eye piece with focal length 10 cm. If this telescope is used to see a 80 meter tall building at a distance of 5km, what is the height of the image of the building formed by the objective lens –
Choices
Choice (4)  Response  

a.  10 cm 

b.  15 cm 

c.  8 cm 

d.  6 cm 

Question number: 17
» Ray Optics » Snell's Law
Question
What is the velocity of the light in the medium if and the velocity of light in a vacuum is ?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

