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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

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Eklavya

Asked: January 1, 2021In: Class 10 Science

Statements 1: Wood is biomass. Statements 2: It produce lot of smoke.

NCERT Solutions for Class 10 Science Chapter 14 Important Board Questions Sources of Energy NCERT Books for Session 2022-2023 CBSE Board and UP Board Very Short Questions Questions No: 18

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Asked: January 1, 2021In: Class 10 Science

“A lens can form a magnified erect image as well as magnified inverted image of anobject placed in front of it”. Same the nature of this lens and draw ray diagrams to justify the above statement. Mark the position of O, F and 2F in the diagram.

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: 11

Eklavya

Asked: December 31, 2020In: Class 10 Science

Give two examples of fossil fuels.

NCERT Solutions for Class 10 Science Chapter 14 Important Board Questions Sources of Energy NCERT Books for Session 2022-2023 CBSE Board and UP Board Very Short Questions Questions No: 8

Eklavya

Asked: December 31, 2020In: Class 10 Science

Apart from cow dung, what can be used for biogas plant?

NCERT Solutions for Class 10 Science Chapter 14 Important Board Questions Sources of Energy NCERT Books for Session 2022-2023 CBSE Board and UP Board Very Short Questions Questions No: 1

(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.

Statements 1: Wood is biomass. Statements 2: It produce lot of smoke.

“A lens can form a magnified erect image as well as magnified inverted image of anobject placed in front of it”. Same the nature of this lens and draw ray diagrams to justify the above statement. Mark the position of O, F and 2F in the diagram.

Give two examples of fossil fuels.

Apart from cow dung, what can be used for biogas plant?

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