Physics-Light [NSTSE (National Science Talent Search Exam- Unified Council) Class 8]: Questions 1 - 7 of 30
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Question 1
Question MCQ▾
Which of the following mirrors are used in periscopes?
Choices
Choice (4) | Response |
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a. | Plane mirrors |
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b. | Plano – convex mirrors |
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c. | Convex mirrors |
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d. | Concave mirrors |
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EditQuestion 2
Question MCQ▾
When two plane mirrors are placed perpendicular to each other, the number of multiple images formed by them is:
Choices
Choice (4) | Response |
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a. |
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b. | 3 |
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c. | 4 |
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d. | 0 |
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EditQuestion 3
Question MCQ▾
If angle between two plane mirrors is , and object is placed between these two mirrors, then number of multiple images formed by these two mirror is,
Choices
Choice (4) | Response |
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a. | 3600 |
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b. | 35 |
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c. | 36 |
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d. | 26 |
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EditQuestion 4
Question MCQ▾
We can see an object, because
Choices
Choice (4) | Response |
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a. | reflects light by object falls on our eyes |
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b. | our eyes projected light on object |
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c. | falls light on object, reflected by eyes |
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d. | All of the above |
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EditQuestion 5
Question MCQ▾
The propagation of light is,
Choices
Choice (4) | Response |
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a. | Either planar or rectilinear propagation |
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b. | Cubic propagation |
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c. | Planar propagation |
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d. | Rectilinear propagation |
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EditPassage
See the following diagram of human eye, and answer the questions given below it.
Question 6 (1 of 3 Based on Passage)
Question MCQ▾
Which of the following letter represents iris of eye?
Choices
Choice (4) | Response |
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a. | Q |
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b. | P |
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c. | S |
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d. | R |
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EditQuestion 7 (2 of 3 Based on Passage)
Question MCQ▾
What is the function of part of eye represented by , in figure?
Choices
Choice (4) | Response |
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a. | Covers anterior chamber of eye |
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b. | Controlling the amount of light entering the eye by contracting or dilating |
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c. | On which image formed |
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d. | Allows the light to fall on retina |
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