Astrophysics

Question 1

Real Image

Answer 1

• light rays from an object are made to pass through another point
• the light rays are actually there

Question 2

virtual image

Answer 2

• light rays from an object appear to have come from another source
• rays arent not where they appear to be

Question 3

1/f = 1/u + 1/v

what is f

Answer 3

focal length

Question 4

1/f = 1/u + 1/v

what is u and v

Answer 4

• u is distance between object and lens
• v is distance between image and lens

(interchangeable)

Question 5

refracting telescope

Answer 5

telescope that uses 2 converging lenses

1. objective lens converges rays from object to form a real image
2. eye lens acts as a magnifying glass on the real image to form a magnified virtual image