PHYSICS

JAMB 2020 - Question 15

Physics 2020 JAMB Past Questions - Question 15: A solid weighs 10 .0 N in air 6.0 N when fully immersed in water and 7.0N when fully immersed in a certain liquid x. calculate the relative density of the liquid

Choose the correct answers from the options given.
A solid weighs 10 .0 N in air 6.0 N when fully immersed in water and 7.0N when fully immersed in a certain liquid x. calculate the relative density of the liquid
A:
B:
C:
D:
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Correct Answer

C

Explanation

R.d = wt. of lig disp /wt of H₂O disp = 10-7/10-6 = 3/4
To find the relative density of the liquid, we can use the formula:

Relative density = (Weight in air - Weight in liquid) / (Weight in air - Weight in water)

Given:
Weight in air = 10.0 N
Weight in water = 6.0 N
Weight in liquid = 7.0 N

Relative density = (10.0 N - 7.0 N) / (10.0 N - 6.0 N)
Relative density = 3.0 N / 4.0 N
Relative density = 0.75

Therefore, the relative density of the liquid is 0.75.