Answer the following 7. What do we mean by saying that image formed by a plane mirror is virtual in nature? Then what is real image? 8. State any 3 application of Multiple reflection of image.
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December 2022
4. Images formed by a new steel plate and an old steel plate are examples of___________________ and _____________________.
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December 2022
6. What is the difference between the behavior of light rays falling onto a glass slab and a glass sheet painted on one side?
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December 2022
Fill in the blanks: 3. _________________ and _____________________ are the examples of aids useful for visually impaired persons. 4. _______________ is the part of human eye that could be drawn analogous to the film used in old cameras.
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December 2022
Mention the pathogen, agents transmitting the disease and general preventive measures for the following diseases. a. Diarrhoea, Ring worm, Typhoid, Cholera and chicken pox.
Find two rational numbers between (i) -1/4 and -2/5 (ii) 0 and 1.
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December 2022
Represent the following rational numbers on the number line. (i) 3/10 (ii) 8/7 (iii) 1.345 (iv)21/7
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December 2022
______________ allows people to participate actively in the functioning of a democracy.
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December 2022
1. Which of the following statements about plastics are true? (i) All plastics do not have same arrangement of monomer units. (ii) Melamine resists fire and can tolerate heat better than other plastics. (iii) Plastics with cross-linked monomers are also known. (iv) Plastics have limited applications. A) (i) and (iii)...