An Object Placed 4 Cm to the Left of a Lens

question 101

Multiple Choice

An object placed 4 cm to the left of a lens with positive focal length f₁ = +2 cm produces an image 4 cm to the right of the lens. A diverging lens, focal length f₂, is now placed at the focal point of the first lens, as shown, and produces a final image 6 cm to the right of lens f₂. The focal length f₂ is

• A) -1.5 cm.
• B) -3.0 cm.
• C) -6.0 cm.
• D) 10 cm.
• E) -2.0 cm.

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Definitions:

Lava

Molten rock expelled by a volcano during an eruption, which solidifies on the Earth's surface.

Shield Volcanoes

Broad, dome-shaped volcanoes with gently sloping sides, formed mostly by the fluid lava flows.

Steep Slopes

Steep slopes are areas of land with a sharp inclination, often leading to rapid erosion, landslides, or provide distinctive habitats for flora and fauna.

Flood Basalts

Vast areas covered by large volumes of basalt lava, which erupt during major volcanic episodes.