A Cell Phone Is Placed 40 Cm in Front of a Converging

question 57

Multiple Choice

A cell phone is placed 40 cm in front of a converging lens with a focal length of magnitude 20 cm.How far is the image of this phone from the lens?

• A)40 cm
• B)20 cm
• C)13 cm
• D)60 cm
• E)10 cm

Understand the concept and applications of the Internet of Things (IoT).

Identify and describe various location services and how they enhance the user experience.

Understand RFID technology, its applications, and its advantages over traditional tracking methods like barcodes.

Recognize the characteristics and benefits of QR codes compared to other forms of data storage.

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Definitions:

Spot Exchange Rate

The current rate for instant purchase or sale of a currency in the exchange market.

Futures Price

The agreed-upon price for a futures contract, which is a legal agreement to buy or sell a particular commodity or asset at a predetermined price at a specified time in the future.

Annual Risk-free Rate

The return on investment expected from a risk-free asset over a one-year period.

Futures Price

The agreed price for the future delivery of an asset in a futures contract market.