TEST PAPER
Class – IX
Subject – Work & Energy
1 Marks Questions
Q2. Define 1 Joule.
Q3. What is the work done on a body moving in a circular path?
Q4. When is work said to be done against the force of gravity?
Q5. Define 1 watt.
Q6. What is kinetic energy?
Q7. What will happen to the Kinetic Energy of a body if its velocity is doubled?
Q8. Name four units of energy.
Q9. In a tug of war, one team gives way to other. What work is being done and by whom?
2 Marks Questions.
Q10. Name the transformation of energy involved in these casesa.Electric
Heater
b. Dynamo
c. Microphone
d. Electric Cell
e. Headphone
f. Photoelectric Cell
g. When Coal burns
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