EASY
10th ICSE
IMPORTANT
Earn 100

Describe any method to find the focal length of a convex lens. Why this method cannot be used to find the focal length of a concave lens.

Important Questions on Refraction Through a Lens

EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 1
Define a lens.
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 6
Explain the lens action assuming it as a combination of frustum of prisms.
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 7

Complete the following diagrams and locate the position of the focus of lens in each case.

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MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 8

Complete the following ray diagrams and locate the image position.

Question Image

EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 13
Draw a diagram to show the first and second focus of concave lens.
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 16
The upper half of a convex lens is made of one transparent medium while the lower half is made of another medium. Will this affect the focal length of the lens? Explain.
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 17
Number of thin and opaque strips are put on the lens of a camera used to take the photograph of a white horse. Whether in the photograph you will find number of images of the horse or the image like a zebra or single image of horse with lesser brightness?
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 14
The focal length of a convex lens and a concave mirror both is 20 cm. What would be the change in their focal lengths if the two are immersed in water?