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Asked: January 3, 2021In: Class 10 Science

An object is placed at the focus of a convex lens. Draw ray diagram to locate the position of image formed.

NCERT Solutions for Class 10 Science Chapter 10 Important Board Questions Light – Reflection and Refraction NCERT Books for Session 2022-2023 CBSE Board and UP Board 3 Marker Questions Questions No: 6

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Asked: January 2, 2021In: Class 10 Science

A 5 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm. If the object is placed 30 cm away from the lens, find the positions, size and nature of images.

NCERT Solutions for Class 10 Science Chapter 10 Important Board Questions Light – Reflection and Refraction NCERT Books for Session 2022-2023 CBSE Board and UP Board 3 Marker Questions Questions No: 4

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Asked: January 1, 2021In: Class 10 Science

An object is placed at a distance of 15 cm from a concave lens of focal length 30 cm. List four characteristic (nature, position, etc.) of the image formed by the lens.

NCERT Solutions for Class 10 Science Chapter 10 Important Board Questions Light – Reflection and Refraction NCERT Books for Session 2022-2023 CBSE Board and UP Board 3 Marker Questions Questions No: 10

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Asked: January 1, 2021In: Class 10 Science

What is meant by power of a lens? Write its SI unit. A student uses a lens of focal length 40 cm and another of –20 cm. Write the nature and power of each lens.

NCERT Solutions for Class 10 Science Chapter 10 Important Board Questions Light – Reflection and Refraction NCERT Books for Session 2022-2023 CBSE Board and UP Board 3 Marker Questions Questions No: 9

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Asked: January 1, 2021In: Class 10 Science

(a) Define 1 dioptre of power. Find the focal length of a lens of power -2.0 D. (b) Why does a lemon kept in water in a glass tumbler appear to be bigger then actual size.

NCERT Solutions for Class 10 Science Chapter 10 Important Board Questions Light – Reflection and Refraction NCERT Books for Session 2022-2023 CBSE Board and UP Board 5 Marker Questions Questions No: 4

An object is placed at the focus of a convex lens. Draw ray diagram to locate the position of image formed.

A 5 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm. If the object is placed 30 cm away from the lens, find the positions, size and nature of images.

An object is placed at a distance of 15 cm from a concave lens of focal length 30 cm. List four characteristic (nature, position, etc.) of the image formed by the lens.

What is meant by power of a lens? Write its SI unit. A student uses a lens of focal length 40 cm and another of –20 cm. Write the nature and power of each lens.

(a) Define 1 dioptre of power. Find the focal length of a lens of power -2.0 D. (b) Why does a lemon kept in water in a glass tumbler appear to be bigger then actual size.

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