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Q:

Which of the following is not a renewable source of energy?

A) Solar B) Wind
C) Ocean waves D) Coal
 
Answer & Explanation Answer: D) Coal

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Q:

What happens to the Potential and Kinetic energies of a body as it falls down from a height?

A) Its Potential energy decreases while its Kinetic energy increases B) There is no change in its Potential or Kinetic energy
C) Its Potential and Kinetic energies decrease D) Its Potential energy increases while its Kinetic energy decreases
 
Answer & Explanation Answer: A) Its Potential energy decreases while its Kinetic energy increases

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Q:

An object of 5.0 kg is raised through a height of 2.0m. The work done in the process is

A) 49 J B) 10 J
C) 19.6 J D) 98 J
 
Answer & Explanation Answer: D) 98 J

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Q:

A 5 kg object is raised through a height of 4 m. The work done by the force of gravity acting on the object is (take g = 10 m/s2)

 

A) 200j B) 20j
C) -20j D) -200j
 
Answer & Explanation Answer: D) -200j

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Q:

The second equation of motion gives the relation between

A) Velocity and time B) Position and velocity
C) Position and time D) Velocity and acceleration
 
Answer & Explanation Answer: C) Position and time

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Q:

The Brownian Motion was discovered by

A) Robert Brown B) Mandel Brown
C) Isaac Newton D) John Brown
 
Answer & Explanation Answer: A) Robert Brown

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Q:

What does Coulomb's Law state?

A) The magnitude of the force of attraction (or repulsion) between two point charges is inversely proportional to the product of quantity of the two charges as well as to the square of the distance between them.   B) The magnitude of the force of attraction (or repulsion) between two point charges is directly proportional to the product of the quantity of the two charges and inversely proportional to the square of the distance between them.  
C) The magnitude of the force of attraction (or repulsion) between two point charges is directly proportional to the product of the quantity of the two charges and directly proportional to the square of the distance between them. D) The magnitude of the force of attraction (or repulsion) between two point charges is directly proportional to the product of the quantity of the two charges and to the square of the distance between them.
 
Answer & Explanation Answer: B) The magnitude of the force of attraction (or repulsion) between two point charges is directly proportional to the product of the quantity of the two charges and inversely proportional to the square of the distance between them.  

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Q:

What of the given below devices converts chemical energy to electrical energy?

A) Transformer B) Battery
C) Electric Generator D) Wheel
 
Answer & Explanation Answer: B) Battery

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