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CBSE Physics Thermal and Chemical Effect Expected Questions for Quick Revision : Unit III

[Short and V/Short Answer Questions 1-2 marks] 1. State two factors on which temperature of inversion for a thermocouple depends. Answer 2. How is the electric conductivity of an electrolyte affected by increase in temperature ? Answer 3. Write the expression connecting the thermoelectric emf. of a thermocouple with temperature difference of its cold and hot junctions. Answer 4. Describe the term electrolysis. Give two factors which are responsible for lower electric conductivity of electrolytes than metals at room temperature. Answer 5. Current I flows through potential difference V across a conductor. What is the rate of production of

CBSE Physics Universe Expected Questions : Unit XIII

Short Answer Type Questions Q. 1. Name the nine plantes. Answer Q. 2. What is 1 AU ? Answer Q. 3. How were the crators caused on the surface of moon ? Answer Q. 4. What is albedo of a planet ? Answer Q. 5. State Hubble's law. Answer Q. 6. What is order of mass of Sun ? Answer Q. 7. What is Milky Way ? Answer Q. 8. How is brightness of star represented ? Answer Q. 9. What is the value of Solar Constant ? Answer Q. 10.

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 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

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