Refraction and Lenses

What are 2 types of lenses? 

• Concave Lens & Convex Lens 
• Concave Lens & Magnifying Lens 
• Convex Lens & Magnifying Lens 

Tags

NGSS.HS-PS4-5

Is a concave lens thicker or thinner in the middle? 

• Thicker 
• Thinner 

Is a convex lens thicker or thinner in the middle?

• Thicker 
• Thinner 

What kind of lens is a magnifying glass?

• Convex Lens
• Concave Lens

Complete this sentence: Concave lenses bend light ___________ from each other. 

• Away 
• Towards

Complete this sentence: Convex lenses bend light __________ from each other. 

• Towards 
• Away 

A converging lens has a focal length of 30 cm. A 5 cm tall candle is placed at a distance of 10 cm in front of the lens. Determine the image distance.

• - 45 cm
• -30 cm
• -15 cm
• 6 cm

What type of image is formed when rays of light actually intersect?

• real
• virtual
• projected
• curved

A convex lens has a focal length f.  If an object is placed at 2f at what distance will the image appear?

• 2f
• f
• between f and 2f
• infinity

This image is.....

• inverted and smaller
• inverted and larger
• not inverted and smaller
• not inverted and larger