Two thermometers have same volume of bulbs – one spherical bulb and the other an elongated cylindrical bulb. Which of the two will respond quickly to temperature change?

Solution

The rate of heat transfer is directly proportional to the surface area of the substance. And, for a given volume, sphere has minimum surface area. That is, the area of a cylindrical bulb is greater than a spherical bulb. Therefore, thermometer with cylindrical bulb will respond more quickly than thermometer with spherical bulb.

Some More Questions From Mechanical Properties of Fluids Chapter

What is the condition for motion to be simple harmonic motion?

In the displacement equation y = r sin(ωt/ + ϕ) what does ϕ called and what information does it give?

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Mechanical Properties Of Fluids

Two thermometers have same volume of bulbs – one spherical bulb and the other an elongated cylindrical bulb. Which of the two will respond quickly to temperature change?

Some More Questions From Mechanical Properties of Fluids Chapter

What is the condition for motion to be simple harmonic motion?

In the displacement equation y = r sin(ωt/ + ϕ) what does ϕ called and what information does it give?

What determines the natural frequency of an oscillator?

Is there any relation between uniform circular motion and simple harmonic motion?

What is periodic motion?

Write down the expression for the instantaneous velocity and acceleration of particle vibrating in simple harmonic motion.

How do you define the mean position of particle executing simple harmonic motion?

Define amplitude.

What is the net displacement of the particle executing simple harmonic motion in one complete oscillation?

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