NSO Level 1- Science Olympiad (SOF) Class 7: Questions 20 - 24 of 593
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Question number: 20
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Question
If we numbering colors of rainbow from 1 to 7 in direction of top to bottom, which one of the following color comes at number 3?
Choices
| Choice (4) | Response | |
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| a. | Green |
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| b. | Yellow |
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| c. | Blue |
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| d. | All of the above |
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Question number: 21
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Question
Match the following,
| List-Ⅰ (Column I) | List-Ⅱ (Column II) |
|---|---|
| (A) Plane mirror | (i) Can form image of objects spread over a large area |
| (B) Convex mirror | (ii) Used as a magnifying lens |
| (C) Concave mirror | (iii) The image is erect and of the same size as the object. |
| (D) Convex lens | (iv) Used by dentist to see enlarge image of teeth |
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| Choice (4) | Response | |
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Question number: 22
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Question
The images formed on the retina are:
Choices
| Choice (4) | Response | |
|---|---|---|
| a. | Cannot decide |
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| b. | Virtual images |
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| c. | Real images |
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| d. | Either Real image or Virtual image |
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Question number: 23
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Question
If we placed an object at the centre of the curveture of the convex lens, then image is at:
Choices
| Choice (4) | Response | |
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| a. | With in the focal length |
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| b. | At center of the curveture |
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| c. | Cannot formed image |
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| d. | Between focal point and centre of the curveture |
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Question number: 24
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Question
In following figure, identify the angle of incident.
Ray Diagram of Reflection
In figure ray diagram of reflection from plane mirror is shown.
Choices
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