In the following diagram, what is the distance x if the radius of curvature is R = 15 cm?

     

1. 30 cm

2. 20 cm

3. 15 cm 

4. 10 cm 

Subtopic:  Refraction at Curved Surface |
 78%
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The slab of a refractive index material equal to 2 shown in the figure has a curved surface APB of a radius of curvature of 10 cm and a plane surface CD. On the left of APB is air and on the right of CD is water with refractive indices as given in the figure. An object O is placed at a distance of 15 cm from pole P as shown. The distance of the final image of O from P as viewed from the left is:
          

1. 20 cm 2. 30 cm
3. 40 cm 4. 50 cm
Subtopic:  Refraction at Curved Surface |
 61%
From NCERT
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A glass sphere μ=32 of radius 12 cm has a small mark at a distance of 3 cm from its centre. Where will this mark appear when it is viewed from the side nearest to the mark along the line joining the centre and the mark?

1. 8 cm inside the sphere 2. 12 cm inside the sphere
3. 4 cm inside the sphere 4. 3 cm inside the sphere
Subtopic:  Refraction at Curved Surface |
 53%
From NCERT
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In a glass (μ = 1.5) sphere with a radius of 10 cm, there is an air bubble B at a distance of 5 cm from C. The distance of the bubble from the surface of the sphere (i.e., point A) as observed from point P in the air will be:

   

1. 4.5 cm 2. 20.0cm 
3. 9.37 cm  4. 6.67 cm
Subtopic:  Refraction at Curved Surface |
 57%
From NCERT
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A mark on the surface of sphere (µ = 3/2) is viewed from a diametrically opposite position. It appears to be at a distance \(15~\mathrm{cm}\) from its actual position. The radius of sphere is:
1. 15 cm
2. 5 cm
3. 7.5 cm
4. 2.5 cm

Subtopic:  Refraction at Curved Surface |
 53%
From NCERT
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh