Test Index

JAMB Physics 2018 Paper

Question : 85

Total: 87

Solution:

Concept:

Relative density compares the weight of the solid in air to the upthrust (loss of weight) when it is fully immersed in water.

Explanation:

Weight in air

= 45N

Weight in water

= 15N

Loss of weight in water is the upthrust:

45N - 15N = 30N

Relative density is given by:

R.D = \frac{\text{weight in air}}{\text{loss of weight in water}}

So,

R.D = \frac{45}{30} = 1.50

Answer:

Relative density

= 1.50

, therefore the correct option is C. 1.50.

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