6. Distinguish between:
(a) Concave and convex lens
(b) Breathing and cellular respiration
(c) Virtual and Real image
Answers
Answers:
1. A convex lens or converging lens focuses the light rays to a specific point whereas a concave lens or diverging lens diverges the light rays.
2. Breathing - It is a physical process in which exchange of gases ( O2 and CO2) takes place. • It occurs outside the cell. • Enzymes are not involved.
Cellular respiration - It is a chemical process (or biochemical process as it occurs in living cells) in which food molecules are oxidised to carbon dioxide and water. • It occurs inside the cell. • Enzymes take part.
3. Real image - • It can be taken on screen. • It is always inverted. • It is formed in front of the mirror.
Virtual image - • It cannot be taken on a screen. • It is always erect. • It is formed behind the mirror.
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Answer:
a.)
a.)A convex lens is thicker at the centre and thinner at the edges. A concave lens is thicker at the edges and thinner at the centre
a.)A convex lens is thicker at the centre and thinner at the edges. A concave lens is thicker at the edges and thinner at the centreb.)
a.)A convex lens is thicker at the centre and thinner at the edges. A concave lens is thicker at the edges and thinner at the centreb.)breathing is the process of inhaling and exhaling air in and out of lungs while breathing oxygen is inhaled and carbon dioxide is exhaled . respiration is the process of breaking down the glucose to produce energy of cells for cellular functions.
a.)A convex lens is thicker at the centre and thinner at the edges. A concave lens is thicker at the edges and thinner at the centreb.)breathing is the process of inhaling and exhaling air in and out of lungs while breathing oxygen is inhaled and carbon dioxide is exhaled . respiration is the process of breaking down the glucose to produce energy of cells for cellular functions.c.)
a.)A convex lens is thicker at the centre and thinner at the edges. A concave lens is thicker at the edges and thinner at the centreb.)breathing is the process of inhaling and exhaling air in and out of lungs while breathing oxygen is inhaled and carbon dioxide is exhaled . respiration is the process of breaking down the glucose to produce energy of cells for cellular functions.c.)A real image and a virtual image are different forms of image. The main difference between real and virtual images lies in the way in which they are produced. A real image is formed when rays converge, whereas a virtual image occurs where rays only appear to diverge.
Explanation:
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