What is the current dose rate if a radiographer reads 7.5 on the 10x scale of the survey meter?

The current dose rate of 7.5 on the 10x scale of a survey meter indicates that the reading on the scale must be multiplied by a factor of 10. This is a common practice with survey meters that use a scale to represent dose rates, where each unit on the scale is associated with a specific multiplier to calculate the actual dose rate in milliRoentgens per hour (mR/h).

In this case, a reading of 7.5 multiplied by 10 results in a dose rate of 75 mR/h. This confirms that the calculated dose rate is directly proportional to the reading on the scale multiplied by its respective multiplier. Other potential answers, such as 7.5 mR/h, 0.75 mR/h, and 1.5 mR/h, do not properly reflect the multiplication necessary for accurate reading interpretation based on the scale used. The consideration of the scale's multiplier is critical in radiation measurements to ensure safe and effective radiation management and safety practices.