Loading question...
You are in free guest mode. Timed Practice Revision List Attempt History Progress Tracking Create a free account to unlock these tools
Prev Next
Practice Listening: Multiple Choice, Multiple Answers ID: #4146 Medium CPA
Instructions ›
Listen to the recording and answer the question by selecting all the correct responses. You will need to select more than one response.
“The main practical application of CPA so far has been in the eye surgery. It was the first one, and I think it is the one that is used by the most people for something practical.”
Donna Strickland on the phone this morning with Göran Hansson of the Nobel Assembly at the Karolinska Institute, after learning that she had shared the Nobel Prize in Physics. CPA is chirped pulse amplification, a technique for producing incredibly short pulses of laser light of very high intensity. A few minutes before talking with Strickland, Hansson made the announcement: “This year’s prize is about tools made from light. The Royal Swedish Academy of Sciences has today decided to award the 2018 Nobel Prize in Physics with one half to Arthur Ashkin for the optical tweezers and their application to biological systems and the other half jointly to Gérard Mourou and Donna Strickland for their method of generating high-intensity, ultra short optical pulses. And Arthur Ashkin was born in 1922 in New York City. He made his remarkable invention at the Bell Laboratories in New Jersey in the United States. Gérard Mourou was born in 1944 in Albertville in France. And he’s currently at the École Polytechnique in Palaiseau in France, and also affiliated with the University of Michigan in the United States.

Which of the following are true about Arthur Ashkin's invention, for which he was given noble prize by Royal Swedish Academy of Sciences?

* Click on the correct answers

Result:

AI explanationShows the answer. Tap to open.
Option 1: "It has applications on biological systems"

Explanation: The text states that Arthur Ashkin's invention, the optical tweezers, has applications to biological systems. This directly supports the correctness of this option, as it aligns with the main idea of the text regarding the practical applications of Ashkin's work.

Option 2: "It was about producing incredible laser light"

Explanation: While the text discusses laser light in relation to Donna Strickland's work, it does not attribute this to Arthur Ashkin's invention. Instead, Ashkin's invention is specifically about optical tweezers, not the production of laser light, making this option incorrect.

Option 3: "It was related to a method of generating high-intensity pulses"

Explanation: This option incorrectly attributes the method of generating high-intensity pulses to Ashkin's invention. The text specifies that this method is associated with Gérard Mourou and Donna Strickland, not Ashkin, thus making this statement inaccurate.

Option 4: "Invention was made at the Bell Laboratories"

Explanation: The text explicitly states that Arthur Ashkin made his invention at the Bell Laboratories in New Jersey. This clear reference confirms the correctness of this option, as it directly relates to the factual details provided in the text.

Option 5: "Invention was made in Albertville in France"

Explanation: This option is incorrect because the text specifies that Arthur Ashkin's invention was made at the Bell Laboratories in New Jersey, not in Albertville, France, where Gérard Mourou was born. Therefore, this statement is factually inaccurate.

The rest of this explanation is for members. Sign in free to read why the other options are wrong, key words and tips.

Sign in to read the full explanation

With a free account: Retry and compare every attempt.
Be the first! No community answers here yet. Submit yours and help others learn.
Saving...