Which of the following phenomena of light are involved in the formation of a rainbow?

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Important Questions on Optics

EASY

10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Optics>Exercise>Q 5

The colour scattered the least-

MEDIUM

10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Optics>Exercise>Q 6

In which of the following, the image of an object placed at infinity will be highly diminished and point sized?

MEDIUM

10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Optics>Exercise>Q 7

A student obtained a sharp image of the grill of a window on a screen using a convex lens. For better results, the teacher suggested focusing of a distant tree instead of the grill. In what direction should the lens be moved for this purpose?

EASY

10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Optics>Exercise>Q 8

A convex lens is distinguished from a concave lens by the property of

EASY

10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Optics>Exercise>Q 9

To determine the approximate focal length of the given convex lens by focusing a distant object (say, a signboard), you try to focus the image of the object on a screen. The image you obtain on the screen is always :

HARD

10th Tamil Nadu Board

IMPORTANT

Science Crash Course (Based on Revised Syllabus-2023)>Chapter 2 - Optics>Exercise>Q 10

A beam of light is incident through the holes on side A and emerges out of the holes on the other face of the box as shown in figure. Which of the following could be inside the box?
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