Q. 1. Draw the ray diagram for an object placed at 2F in front
of convex mirror.
Q. 2. Explain the different types of energy that can be obtained from
oceans.
Q. 3. What is the principle used in motors and discuss the role of split rings in electric motors.
Q. 4. Magnification of object is –1 . What kind of spherical mirror is Used and what is position of the object.
Q. 5. Hydrogen has been used as rocket fuel. Is it cleaner than CNG? why or why not.
Q. 6. Explain the construction ,working ,advantages and disadvantages of using solar cooker with diagram.
Q. 7. How has the traditional use of wind and water energy been modified for our convenience.
Q. 8. Find the equivalent resistance between A and B and find current In 5 ohm resistance
Q. 9. Why dispersion of light is found in case of prism and not in glass Slab. From the diagram give the number that corresponds to color Of danger signal. Why only that color is used as danger signal.
Q. 10. A convex lens has focal length of 50 cm. What is its power ? An object is kept at distance of 75 cm from this lens. Where Is the image formed ? How does size of image compare with that of object ?
Q. 11. Explain house hold wiring system with diagram. Explain the terms
