I do not have a 24" iMac. I have a 20" iMac. Apple no longer sells the 24" iMac. If you will click the Apple logo on the top left of your screen and then click About This Mac then More Info you can find the answer.
The 21.5" iMac has 1920x1080 resolution.
The 27" iMac has 2560x1440 resolution.
If everything on your iMac screen appears larger than normal the screen's resolution will have been changed - probably by some game that failed to switch it back again. Open System Preferences and then click on the Displays button. You can now select from available screen resolutions. The greater the resolution the smaller items will appear on the screen.
The maximum resolution available for Mac wallpapers is only limited by the size of the Mac screen. The wallpapers themselves can be of any resolution.
Change the screen resolution to a higher level. Click System Preferences in the Dock and then Display.
click the Apple icon in the menu barclick system preferencesclick the mouse icon
No, the screen is a LED display.
That would depend on what you consider to be "high-resolution". Though, the 24" iMac supports resolutions up to 1920 by 1200 pixels.
No, the iMac is not a touch screen. The only touch screen products made by Apple are the iPad, iPhone and iPod Touch.
The measurements used to determine a monitors screen resolution is Pixels per Inch (PPI). The size of a monitor in inches and the total pixels in the horizontal and vertical directions determines the PPI of the screens resolution. For Example a 15 inch monitor has a maximum of 1024x768 pixel resolution.
What allows you to adjust the screen resolution
2048x1536 at 85 Hz maximum resolution
On the back of the computer screen.
Click the link.