Which of the following statements about the working principle behind a basic still camera is true?
a.
light entering the camera through a nonadjustable opening is focused on light-sensitive film at the back of the camera.
b. light entering the camera through a light-sensitive opening is focused on 35 mm film at the back of the camera.
c.
changeable lenses of different focal lengths allow light to enter the camera, which then forms the image on light-sensitive film.

C. Changeable lenses of different focal lengths allow light to enter the camera, which then forms the image on light-sensitive film.

Explanation:

A is not an option, as the opening is always adjustable. And B is also not an option opening is never light sensitive. And C seems to be correct as changeable lenses of the different focal lengths are the correct option, and it certainly allows light to enter the camera, which then forms the image on the light-sensitive film.

the benefits of raising bc’s minimum wage to $15 through a

series of pre-announced staged increases far outweigh the likely

costs. claims that such an increase will lead to massive job losses

in low-wage sectors of the economy are not credible.

• an increase to $15 would result in some job losses. however,

the likely impact is less than a 1 per cent reduction in the overall

provincial employment rate, and a 7.6 per cent reduction in the

employment rate for those currently making between $10.25

and $15 per hour.

• the large job loss impacts predicted by some opponents of

minimum wages misrepresent the existing economic research. in

reading and using that research, it is important to recognize that

estimates showing job loss effects of minimum wage increases

apply only to teenagers. estimated effects for young adult and

adult workers range from insignificant to non-existent.

• focusing on teenage workers plays up an inaccurate stereotype

about who earns very low wages in bc and leads to exaggerated

claims about job losses. only 26 per cent of those currently making

between $10.25 and $12 are teenagers, and only 5 per cent

of those making between $12 and $15 are teenagers.