A Lens Is Made of Glass of Index of Refraction

question 60

Multiple Choice

A lens is made of glass of index of refraction 1.60. If both the surfaces are convex and the radii of curvatures are 10 cm and 20 cm, the focal length of the lens in air is

• A) 11.1 cm.
• B) -11.1 cm.
• C) 25 cm.
• D) 33.3 cm.
• E) -33.3 cm.

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Definitions:

Withdrawn

A state or behavior characterized by a reluctance to engage with others or participate in social activities, often due to emotional or psychological reasons.

Securely Attached

A term describing individuals who have a positive view of themselves and their relationships, leading to healthy and trusting interpersonal connections.

Separation Anxiety

A disorder characterized by excessive fear or anxiety about being apart from attachment figures or familiar home environments.

Unpredictable Temperament

An individual's behavioral style that is irregular or difficult to forecast, affecting how they react in various situations.