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In television, 4 : 3 represents the
- a)interlace ratio
- b)maximum horizontal to vertical deflection
- c)aspect ratio
- d)horizontal to vertical sweep frequency ratio
Correct answer is option 'A'. Can you explain this answer?
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Aspect Ratio and Interlace Ratio in Television
Aspect Ratio
The aspect ratio of a television screen is the ratio of its width to its height. The aspect ratio of a traditional television screen is 4:3, which means that the width of the screen is four units for every three units of height.
Interlace Ratio
Interlace ratio refers to the ratio of the horizontal sweep frequency to the vertical sweep frequency in a television signal. In a traditional television signal, the interlace ratio is 4:3, which means that the horizontal sweep frequency is four times that of the vertical sweep frequency.
Relation between Aspect Ratio and Interlace Ratio
The aspect ratio and the interlace ratio are related because the interlace ratio determines the number of lines that can be displayed on the screen. In a 4:3 interlace ratio, there are 525 lines in the NTSC system and 625 lines in the PAL system. The aspect ratio is then determined by the number of pixels in each line.
Conclusion
In conclusion, the correct answer to the question is (A) interlace ratio. The aspect ratio of a television screen is 4:3, but this is determined by the interlace ratio, which is the ratio of the horizontal sweep frequency to the vertical sweep frequency in a television signal.
Aspect Ratio
The aspect ratio of a television screen is the ratio of its width to its height. The aspect ratio of a traditional television screen is 4:3, which means that the width of the screen is four units for every three units of height.
Interlace Ratio
Interlace ratio refers to the ratio of the horizontal sweep frequency to the vertical sweep frequency in a television signal. In a traditional television signal, the interlace ratio is 4:3, which means that the horizontal sweep frequency is four times that of the vertical sweep frequency.
Relation between Aspect Ratio and Interlace Ratio
The aspect ratio and the interlace ratio are related because the interlace ratio determines the number of lines that can be displayed on the screen. In a 4:3 interlace ratio, there are 525 lines in the NTSC system and 625 lines in the PAL system. The aspect ratio is then determined by the number of pixels in each line.
Conclusion
In conclusion, the correct answer to the question is (A) interlace ratio. The aspect ratio of a television screen is 4:3, but this is determined by the interlace ratio, which is the ratio of the horizontal sweep frequency to the vertical sweep frequency in a television signal.
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