Physics (2017) Discuss

The instrument to measure the relative density of light is

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Question 38
A
thermometer
B
hydrometer
C
spring balance
D
beaker
Explanation
Thermometer is used to measure temperature
Hydrometer is used to measure relative density of liquid.
Spring balance is used to measure the weight of an object
Beaker is used to measure or take volume of a liquid

Correct option: B

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