General Physics Questions And Answers


Q1. 
Identify the direction in which a thin long piece of magnet comes to rest when suspended freely.

Ans.
North-south


Q2. 
Which of the following is not a basic property of magnets.

Ans.
Magnet exists as a monopole


Q3. 
Which of the following is a natural magnet?

Ans.
Magnetite


Q4. 
Magnetic lines of force always form open loops. State true or false.

Ans.
False


Q5. 
A magnet can only repel another magnet. So, ‘X’ is a surer test of magnetism. Identify X.

Ans.
Repulsion


Q6. 
Which of the following statement is valid?

Ans.
Lenz’s law is a consequence of the law of conservation of energy


Q7. 
The current in a wire passing normally through the center of a conducting loop is increasing at a constant rate. What is the net current induced in the loop?

Ans.
Zero


Q8. 
Which of the following is found using Lenz’s law?

Ans.
The direction of induced emf


Q9. 
Lenz’s law is invalid. State true or false.

Ans.
False


Q10. 
‘X’ states that the direction of induced current in a circuit is such that it opposes the cause or the change which produces it. Identify X.

Ans.
Lenz’s law