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10th CBSE
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What is the difference between the virtual images formed by a convex lens and a concave lens?

Important Questions on Refraction of Light

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10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 5 - Refraction of Light>Multiple Choice Questions (MCQs)>Q 17
A diverging lens is used in
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10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 5 - Refraction of Light>Multiple Choice Questions (MCQs)>Q 18
When an object is kept at any distance in front of a concave lens, the image formed is always:
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10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 5 - Refraction of Light>Multiple Choice Questions (MCQs)>Q 19
When sunlight is concentrated on a piece of paper by a spherical mirror or lens, then a hole can be burnt in it. For doing this, the paper must be placed at the focus of:
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10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 5 - Refraction of Light>Multiple Choice Questions (MCQs)>Q 20

A beam of parallel light rays is incident through the holes on one side of a box and emerges out through the holes on its opposite side as shown in the diagram below.

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Which of the following could be inside the box?

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10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 5 - Refraction of Light>Multiple Choice Questions (MCQs)>Q 21

A beam of light is incident through the holes on one side of a box and emerges out through the holes on its opposite side as shown in the following figure.

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The box contains:

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10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 5 - Refraction of Light>Multiple Choice Questions (MCQs)>Q 22
Which of the following can form a virtual image which is always smaller than the object?
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10th CBSE
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Science for Tenth Class Part - 1 Physics>Chapter 5 - Refraction of Light>Questions Based on High Order Thinking Skills (HOTS)>Q 23

When an object is placed 10 cm in front of lens A, the image is real, inverted, magnified and formed at a great distance. When the same object is placed 10 cm in front of lens B, the image formed is real, inverted and same size as the object.

What is the focal length of lens A?

EASY
10th CBSE
IMPORTANT
Science for Tenth Class Part - 1 Physics>Chapter 5 - Refraction of Light>Questions Based on High Order Thinking Skills (HOTS)>Q 23

When an object is placed 10 cm in front of lens A, the image is real, inverted, magnified and formed at a great distance. When the same object is placed 10 cm in front of lens B, the image formed is real, inverted and same size as the object.

What is the focal length of lens B?