Question 13

In the arrangements A and B shown in Figure, pins P and Q are fixed to a metal loop and an iron rod with the help of wax. In which case are both the pins likely to fall at different times? Explain.

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Solution

In case ‘B’ the pin P will fall before the pin Q because the heat will reach pin P first. In case of ‘A’, the heat travels in both the directions and pins P and Q will fall simultaneously.

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Question 12

A circular metal loop is heated at point O as shown in Figure.

(i) In which direction would heat flow in the loop?
(ii) In which order the pins at points P,Q and R fixed with the help of wax fall if points O, P, Q and R are equidistant from each other?

Use the following information to answer the next question.

Four pins (I, II, III, and IV) are fixed to a metallic rod with the help of wax. The rod is heated at one end.

Which of the following pins would drop first?

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Conduction

Standard VII Physics

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Question 13 In the arrangements A and B shown in Figure, pins P and Q are fixed to a metal loop and an iron rod with the help of wax. In which case are both the pins likely to fall at different times? Explain.

In case ‘B’ the pin P will fall before the pin Q because the heat will reach pin P first. In case of ‘A’, the heat travels in both the directions and pins P and Q will fall simultaneously.

Question 13

In the arrangements A and B shown in Figure, pins P and Q are fixed to a metal loop and an iron rod with the help of wax. In which case are both the pins likely to fall at different times? Explain.