Question

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Answer 1

Answer:

"

1. Focal length (shown in red) is the distance between the center of a convex lens or a concave mirror and the focal point of the lens or mirror — the point where parallel rays of light meet, or converge.

2. Image is formed: A real, inverted and smaller image is formed between the center of curvature and focus

Position: between C and F.

Size smaller than the object. "

Explanation:

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Answer 2

Answer:

Reaction of hydrochloric acid with magnesium ribbon. In this reaction hydrochloric acid react with magnesium ribbon and form magnesium chloride and hydrogen gas. When hydrochloric acid reacts with crushed egg shells and utilise to you formation of calcium chloride carbon dioxide gas and water.

Explaination:

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