In which of the following weapons, empty caridge case is ejected after firing –
**Core Concept**
The question is testing the understanding of the mechanism of operation of various types of firearms, specifically the ejection of spent cartridges. In firearms, ejection refers to the process by which the spent cartridge case is removed from the chamber after firing.
**Why the Correct Answer is Right**
The correct answer is related to the mechanism of operation of semi-automatic pistols, which use a combination of gas and recoil to cycle the action and eject the spent cartridge case. When a semi-automatic pistol is fired, the recoil of the slide back and the pressure from the expanding gases propel the slide forward, stripping a new round from the magazine and chambering it. As the slide returns to its forward position, the spent cartridge case is ejected from the chamber through the ejection port.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because revolvers do not use a slide, and the spent cartridge case is typically ejected through the cylinder gap or extractor rod, not the ejection port.
* **Option B:** This option is incorrect because bolt-action rifles do not use a semi-automatic mechanism, and the spent cartridge case is typically ejected through the ejection port or bolt face, but not after firing in the same way as a semi-automatic pistol.
* **Option C:** This option is incorrect because single-shot pistols do not use a semi-automatic mechanism, and the spent cartridge case is typically ejected through the breech or extractor rod, not the ejection port.
**Clinical Pearl / High-Yield Fact**
The type of ejection mechanism used in firearms can be an important consideration for forensic analysis and ballistic reconstruction.
**Correct Answer: . Semi-automatic pistol.**