» CBSE Physics Universe Expected Questions : Unit XIII : CBSE Sample Question Papers

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CBSE Physics 12 Universe Expected Questions : Unit XII

Short/V. Short Answer Questions (1,2 Marks Questions) 1. Name the two factors which account for existence of atmosphere on the planet. Answer 2. How is the luminosity of a star affected by the increase in its mass ? Answer 3. Name the parameters which determine the apparent colour of a star. Answer 4. What is geostationary satellite ? Answer 5. What are meteorites ? Answer 6. How does a radar help in determining the distance of a distant object ? Answer 7- Write the sequence of steller spectra which arranges the states in order of decreasing tempera¬ture.

CBSE Physics Solids and Semi-Conductor Devices Expected Questions : Unit XII

Very Short Answer Type Questions Q. 1. Define semiconductor. Answer Q. 2. What is doping ? Answer Q. 3. Doping of silicon with indium leads to which type of semiconductor ? Answer Q. 4. What is n-type semiconductor ? Answer Q. 5. What is p-type semiconductor ? Answer Q. 6. Define Gate. Answer Q. 7. Which of crystalline or amporphous substance isotropic ? Answer Q. 8. Why transistor is so called 7 Answer Q. 9. What (11011)2 stand for? Answer Q. 10. How can you test in

CBSE Physics Atom, Nucleus, Nuclear Energy Expected Questions : Unit XI

Very Short Answer Type Questions Q. 1. Define isotopes. Answer Q. 2. Define isobars. strong>Answer Q. 3. What is atomic mass unit ? strong>Answer Q. 4. Define nuclear fission and fusion. strong>Answer Q. 5. Define Curie. strong>Answer Q. 6. Define half life period. strong>Answer Q. 7. What is approximately density of nucleus ? strong>Answer Q. 8. What is the ratio of gravitational, electric and nuclear interaction ? strong>Answer Q. 9. What is mass defect ? strong>Answer Q. 10. Deine radioactive decay constant. strong>Answer Q. 11. What is the relation between nuclear

CBSE Economics Sample Question Paper - Year 1998

Economics Class - XII (CBSE) You are on questions 1 to 18 of Set I Time allowed :3 hours Maximum Marks: 100 Note: (i) All questions are compulsory. (ii) Marks allotted to each question are indicated against it. (iii) Question numbers 1-14 and 19-22 are very short-answer questions.They should be answered in one sentence each. (iv) Question numbers 5-6 and 23-24 are very short-answer questions.Answer to these should not normally exceed 30 words each. (v) Question numbers 7-15 and 25-33 are short-answer questions.Answer to these should not normally exceed 60 words each. (vi) Question numbers 16-18 and 34-36 are very long-answer questions.Answer to these should not normally exceed 100

CBSE Physics Electromagnetic Waves Expected Questions : Unit VII

(Short/V. Short Answer Questions-1, 2 Marks) 1. What features of e.m. waves lead Maxwell to conclude that light itself is electromagnetic wave ? Answer 2. For an electromagnetic wave, write the relationship between amplitude of electric and magnetic field in free space. Answer 3. State tour properties or electromagnetic waves. Answer 4. Why sky waves cannot be used in television broadcasting ? Answer 5. What is the cut off frequency beyond which the ionosphere does not reflect electromagnetic radiations ? Answer 6. Give a diagram for which it is clear that "taller the antenna, longer the coverage of the