To answer this question, you need to understand the process of generating output from a laser. Let's go through each option to understand why it is correct or incorrect:

Option A) Pumping - This option is correct because the process of exciting an active medium in a laser is called pumping. Pumping involves supplying energy to the active medium, such as a solid, liquid, or gas, to raise electrons to higher energy levels.

Option B) Exciting - This option is incorrect because while it describes the general concept of the process, the specific term used in the context of lasers is "pumping."

Option C) Priming - This option is incorrect because priming is not the term used to describe the process of exciting an active medium in a laser.

Option D) Raising - This option is incorrect because while it describes the general concept of raising electrons to higher energy levels, the specific term used in the context of lasers is "pumping."

The correct answer is A) Pumping. This option is correct because it accurately describes the process of exciting an active medium in a laser.

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• Wrong explanation

To answer this question, you need to understand the process of generating output from a laser.

The correct answer is A) Pumping. This process involves supplying energy to the active medium of a laser in order to excite its atoms or molecules into a higher energy state. This excitation process is necessary to achieve population inversion, which is crucial for the production of stimulated emission and the amplification of light in a laser. Once the active medium is pumped and reaches the necessary energy level, it can produce stimulated emission and generate the laser output.

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• Wrong explanation

To answer this question, you need to understand the history of email addresses and the symbol "@".

Option A) 1976 - This option is incorrect because the "@" symbol was chosen for email addresses before 1976.

Option B) 1972 - This option is correct. The "@" symbol was chosen for its use in email addresses in 1972.

Option C) 1980 - This option is incorrect. The "@" symbol was chosen for email addresses before 1980.

Option D) 1984 - This option is incorrect. The "@" symbol was chosen for email addresses before 1984.

The correct answer is B) 1972. This option is correct because the "@" symbol was chosen for its use in email addresses in 1972.

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• Wrong explanation