Question

A pendulum clock is 5 sec fast at temperature of 15oC and 10 seconds slow at a temperature of 30oC. At what temperature does it give the correct time?

Solution

Correct option is

20oC

                   

                     

 

Solving we get,         

                              

                                       

SIMILAR QUESTIONS

Q1

A rectangular block is heated from 0oC to 100oC. The percentage increase in its length is 0.10%. What will be the percentage increase in its volume?

Q2

A thick and a thin wire of same material and same length are heated from 10oC to 90oC. Which expands more?

Q3

Two rods of same material and length have their radii in ratio of 3:1, the ratio of expansion  when same amount of heat is supplied will be:

Q4

A piece of platinum can be sealed successfully into soda glass but not a piece of copper because:

Q5

Liquid is filled in a flask up to a certain point. When the flask is heated, the level of liquid:

Q6

Coefficients of volume expansion of substances are generally in the range of:

Q7

The metal of a pendulum clock has a coefficient of expansion as K. Its period is 2 s at 15oC. If the temperature increases to 25oC, shall the clock:

Q8

A metal ball immersed in alcohol weighs W1 at 00C and W2 at 59oC. The coefficient of cubical expansion of the metal is less than that of alcohol. Assuming that the density of metal is large compared to that of alcohol, it can be show that:

Q9

Two straight metallic strips each of thickness t and length L are rivetted together. Their coefficients of linear expansions are   If they are heated through temperature , the bimetallic strip will bend to form an arc of radius:

Q10

A thermometer is graduated in millimeters. It registers – 3 mm when the bulb of thermometer is in pure melting ice and 22 mm when the thermometer is in steam at a pressure of 1 atmosphere. The temperature in oC when the thermometer registers 13 mm is: