The coefficient of volume expansion of glycerine is 49 x 10…

Physics Kinetic Theory of Gases NTA Abhiyas Question MCQ (Single Correct)

The coefficient of volume expansion of glycerine is 49 x 10 -5 K -1 . The fractional change in its density for a 30 °C rise in temperature will be

1.45 x 10 -2

2 x 10 -4

3.5 x 10 -3

2.5 x 10 -2

Text Solution

Verified by Experts

The correct answer is:

1.45 x 10 -2

Let V 0 be the initial volume of glycerine, i.e, at 0 °C (dry). If Vt be its volume at 30 °C

Then V t = V 0 (1 + v t)

=V 0 (1 + 49 x 10 -5 x 30)

V t = V 0 (1 + 0.01470) = 1.0147070 V 0

Let and be the initial and final densities of glycertine then initial density, and final density,

Where, m =mass of glycertine

fractional change in the density

Here, negative sign shows that density decreases with rise in temperature

Get practice questions, solutions, and test series in one place.

Share your experience with this question and solution.

Send your comment, doubt, correction, or feedback to admin.

What students say about this solution

No reviews yet. Be the first to write a review.