Match the following: Column A Column B 1. Animations a. 3 D 2. Raster b. Visual Communication 3. Vector c. Pixels 4. Virtual Reality d. Microsoft Photostory 5. Video Story e. Illustrator

Visual communication is the communication of information and concepts using symbols and images. It uses visual elements like charts, graphs to convey the idea or the information. Animation is also a form of visual communication where it creates a sensation of moving images using still images. Raster Graphics are created on the basis of pixels. The photos taken by the camera and the photos scanned by a scanner are of the raster type. When we enlarge this type of photos we could see the pictures as rectangular layers or grids. The pictures created by these graphics are entered as file and data. Vector pictures are created on the basis of mathematics, even when we enlarge the picture it’s accuracy won’t change. The software which edits the vector graphics images is Adobe Illustrator, sketch and Inkscape. Virtual Reality is a technology that shows the computer image as a real image. When we see games through this technology we can feel or perceive the setting of the game as real. It is a new technology developed in 3 D . Microsoft Photo story is a software which helps to convert the photos into videos. This software uses a music and pictures to create the video. It helps us to upload images, give animation, audio effects etc. Column A Column B 1. Animations b. Visual communication 2. Raster c. Pixels 3. Vector e. Illustrator 4. Virtual Reality a. 3 D 5. Video Story d. Microsoft Photostory

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What does RADAR stands for?

Important Questions on Communication Systems

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Physics>Modern Physics>Communication Systems>Radar

In military applications the radar cross sections of vehicles is minimized.

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Physics>Modern Physics>Communication Systems>Radar

What is the refractive index of the ionosphere?

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Physics>Modern Physics>Communication Systems>Radar

For radar system, antennas with a large beam width are preferred over narrow beam antennas.

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Physics>Modern Physics>Communication Systems>Radar

Construction of pulse radar is much simpler than a Doppler radar.

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Physics>Modern Physics>Communication Systems>Radar

Is refractive index proportional to frequency?

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Physics>Modern Physics>Communication Systems>Radar

What is the frequency range of signals that propagate best by ionospheric refraction?

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Physics>Modern Physics>Communication Systems>Radar

The radar in which both transmission and reception is done using the same antenna are called:

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Physics>Modern Physics>Communication Systems>Radar

What is radar State any one application of it?

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Physics>Modern Physics>Communication Systems>Radar

What is the formula for refractive index?

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Physics>Modern Physics>Communication Systems>Radar

In a RADAR system the transmitter of the radar is more sensitive than the receiver.

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Physics>Modern Physics>Communication Systems>Radar

The ionospheric layer acts as a reflector for the frequency range:

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Physics>Modern Physics>Communication Systems>Radar

What is the relationship between velocity of light and refractive index?

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Physics>Modern Physics>Communication Systems>Radar

What is radar and how it works?

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Physics>Modern Physics>Communication Systems>Radar

When a power Pt is transmitted by an antenna, amount of energy incident on the target is given by the expression:

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Physics>Modern Physics>Communication Systems>Radar

Match the following:

Column A	Column B
1. Animations	a. $3 D$
2. Raster	b. Visual Communication
3. Vector	c. Pixels
4. Virtual Reality	d. Microsoft Photostory
5. Video Story	e. Illustrator