MEDIUM
10th Telangana Board
IMPORTANT
Earn 100

Find the refractive index of the glass which is a symmetrical convergent lens if its focal length is equal to the radius of curvature of its surface.

Important Questions on Refraction of Light at Curved Surfaces

MEDIUM
10th Telangana Board
IMPORTANT
Physical Science Class 10>Chapter 4 - Refraction of Light at Curved Surfaces>Improve your learning>Q 9
Find the radii of curvature of a convexo –concave convergent lens made of glass with refractive index n=1.5 having focal length of 24 cm. One of the radii of curvature is double the other.
MEDIUM
10th Telangana Board
IMPORTANT
Physical Science Class 10>Chapter 4 - Refraction of Light at Curved Surfaces>Improve your learning>Q 1)

A convex lens is made up of three different materials as shown in the figure. How many of images does it form?

Question Image

MEDIUM
10th Telangana Board
IMPORTANT
Physical Science Class 10>Chapter 4 - Refraction of Light at Curved Surfaces>Improve your learning>Q 2)
You have a lens. Suggest an experiment to find out the focal length of the lens.
EASY
10th Telangana Board
IMPORTANT
Physical Science Class 10>Chapter 4 - Refraction of Light at Curved Surfaces>Improve your learning>Q 4)

Figure shows ray AB that has passed through a divergent lens. Construct the path of the ray up to the lens if the position of its foci is known.

Question Image

MEDIUM
10th Telangana Board
IMPORTANT
Physical Science Class 10>Chapter 4 - Refraction of Light at Curved Surfaces>Improve your learning>Q 5)

Figure shows a point light source and its image produced by a lens with an optical axis N1N2. Find the position of the lens and its foci using a ray diagram.

Question Image

MEDIUM
10th Telangana Board
IMPORTANT
Physical Science Class 10>Chapter 4 - Refraction of Light at Curved Surfaces>Improve your learning>Q 6)

Find the focus by drawing a ray diagram using the position of source S and the image S' given in the figure.

Question Image

HARD
10th Telangana Board
IMPORTANT
Physical Science Class 10>Chapter 4 - Refraction of Light at Curved Surfaces>Improve your learning>Q 7)
A parallel beam of rays is incident on a convergent lens with a focal length of 40 cm. Where a divergent lens with a focal length of 15 cm should be placed for the beam of rays to remain parallel after passing through the two lenses? Draw a ray diagram.
HARD
10th Telangana Board
IMPORTANT
Physical Science Class 10>Chapter 4 - Refraction of Light at Curved Surfaces>Improve your learning>Q 8)
The distance between two point sources of light is 24 cm .Where should a convergent lens with a focal length of f=9 cm be placed between them to obtain the images of both sources at the same point?