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Two identical balls of wax are attached ...

Two identical balls of wax are attached on the outer surfaces of two tin sheets. The inner surface of 'P' is coated with lamp black and that of Q is polished. If a source of heat is palced between P and Q then which ball with melt first?

A

Q ball

B

P ball

C

both simultaneously

D

nothing can be predicted

Text Solution

Verified by Experts

The correct Answer is:
B
P is black so it will abosrb more energy faster.
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BANSAL-MASTER PRACTICE PROBLEM-Additional topic
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  2. The manifestation of band structure in solids is due to

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  6. In the following, which one of the diodes is reverse biased ?

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  7. The circuit has two oppositively connected ideal diodes in parallel wh...

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  9. In the circuit below, A and B represents two inputs and C represents t...

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  10. A p-n junction (D) shown in the figure can act as a rectifier. An alte...

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  11. The logic circuit shown below has the input waveforms ‘A’ and ‘B’ as s...

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  12. The combination of gates shown below yields .

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  13. Truth table for system of four NAND gates as shown in figure is : .

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  14. In semiconductor the concentrations of electron and holes are 8xx10^(1...

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  15. A potential difference of 2V is applied between the opposite faces of ...

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  16. The main cause of avalence breakdown is

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  18. In the given figure, which of the diodes are forward biased?

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  19. Current in the circuit will be

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