Question

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:

Solution

Correct option is

 

The upthrust is given by

                    

 

So the upthrust at toC is given by

                 

                 

As  hence upthrust at oC < upthrust at 0oC. So the upthrust is decreased. Hence, weight in liquid gets increased.

SIMILAR QUESTIONS

Q1

If the length of a cylinder on heating increases by 2%, the area of its base will increase by:

Q2

When a copper ball is heated, the largest percentage increase will occur in its: 

Q3

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?

Q4

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

Q5

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:

Q6

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

Q7

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

Q8

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

Q9

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:

Q10

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: