Question

1) A wind vane is used to fine

a) the North South direction. (b) the East West direction

c) Wind speed (d) Wind direction

2) A convex mirror produces

a) real and upright images. (b) virtual and diminished images.

c) real and enlarged images (d) virtual and enlarged images​

Answer 1

Answer:

1 answer is b

2 answer is d

Answer 2

Answer:

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1). Anemometers measure wind speed and wind vanes measure wind direction. A typical wind vane has a pointer in front and fins in back. When the wind is blowing, the wind vane points into the wind. For example, in a north wind, the wind vane points northward.

2). The image produced by a convex mirror is always virtual, and located behind the mirror. When the object is far away from the mirror the image is upright and located at the focal point. As the object approaches the mirror the image also approaches the mirror and grows until its height equals that of the object.