Thermometer

Q. $0K$ is fixed as the lower point in Kelvin scale of a thermometer.

1. True
2. False

Q. The lower fixed point of Celsius scale and Fahrenheit scales of a lab thermometer have the same magnitude.

1. True
2. False

Q.

In thermometers, mercury expands due to conduction of heat.

1. True
2. False

Q.

One should read the thermometer by keeping the level of mercury along the line of sight, in order to avoid

1. tilting of our head

2. fall of mercury level

3. damage to our eyes

4. parallax error

Q.

What are the two fixed points normally used to calibrate a thermometer.

Q. Mercury when temperature decreases and when temperature increases.

1. expands
2. flows
3. remains still
4. contracts

Q.

State whether the following is true or false.

Mercury expands much more for any temperature difference as compared to alcohol.

1. True
2. False

Q. If there are 10 minor divisions between two major divisions, one major division representing $1^{\circ }C$, one minor division will be equal to:

1. $2^{\circ }C$
2. $1^{\circ }C$
3. $3^{\circ }C$
4. $4^{\circ }C$

Q. One should read a thermometer by keeping the level of its mercury along one's line of sight, in order to avoid ________.

1. any damage to eyes
2. reading a wrong value
3. any leakage of mercury
4. the fall of the mercury level

Q. Assertion :The watches having hours hand, minutes hand and seconds hand have a least count of 1 ms. Reason: Least count is the smallest value that can be measured accurately by an instrument.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Assertion is incorrect but Reason is correct

Q. Which metal is used in a thermometer?

Q.

If there are $5$ minor divisions between two major divisions, one major division representing $1^{\circ }C$, one minor division will be equal to:

1. When the mercury level is in between the divisions

2. When the mercury level coincides with a minor division

3. When the mercury level coincides with a major division

4. Depends on the type of thermometer

Q. One should read the thermometer by keeping the level of mercury along the line of sight, in order to avoid ___.

1. damage to our eyes
2. reading the wrong value
3. tilting of our head
4. fall of mercury level