Which device has a ball on it that can be spinned in various directions?a)Mouseb)Scannerc)Trackballd)JoystickCorrect answer is option 'C'. Can you explain this answer?

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Class 8 Exam > Class 8 Questions > Which device has a ball on it that can be spi...

Which device has a ball on it that can be spinned in various directions?

a)
Mouse
b)
Scanner
c)
Trackball
d)
Joystick

Correct answer is option 'C'. Can you explain this answer?

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Verified Answer

Which device has a ball on it that can be spinned in various direction...

Device with a ball that can be spun in various directions:
- The correct answer is Trackball.
- A trackball is a pointing device that consists of a ball on top that can be rotated with the fingers or palm of the hand.
- The ball controls the movement of the cursor on the screen.
- Unlike a mouse, which is moved on a surface, a trackball is stationary and the ball is manipulated by the user.
- The user can spin the ball in various directions to move the cursor in different directions.
- Trackballs are often used as an alternative to mice for people with limited mobility or for those who prefer a different input method.
- They are commonly found in computer systems, gaming devices, and industrial applications.
Other options:
- Mouse: A mouse is a pointing device that typically has buttons and a scroll wheel, but no ball for spinning.
- Scanner: A scanner is a device used to digitize images or documents, it does not have a ball for spinning.
- Joystick: A joystick is a device used for controlling the movement of objects, such as in gaming or aviation simulations, but it does not have a ball for spinning.
Therefore, the correct answer is C: Trackball.

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