Which of the following subatomic particle was covered by Goldstein on the basis of the cathode ray experiment ?

Options

A. Proton
B. Neutron
C. Electron
D. Muon

Explanation

To solve the question "Which of the following subatomic particle was covered by Goldstein on the basis of the cathode ray experiment?", we can follow these steps:

### Step 1: Understand the Cathode Ray Experiment
The cathode ray experiment was conducted by J.J. Thomson, which led to the discovery of the electron. However, the question specifically asks about Goldstein.

### Step 2: Identify Goldstein's Contribution
Goldstein conducted experiments using a cathode ray tube and observed the behavior of rays traveling in the opposite direction to the cathode rays. He discovered these rays and named them "canal rays."

...