Draw a diagram to show the first and second focus of 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 14

Define the second focal length of a convex lens. Explain with diagram.

EASY

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 5 - Refraction Through a Lens>QUESTIONS>Q 15

Define the second focal length of a concave lens. Explain with diagram.

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 18

A convex lens as shown in the figure is painted black from three places. How it will affect the focal length of the lens?

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