MCQ practice · SSC Physics Board questions · Chapter 5: State of Matter and Pressure
Which two quantities have the same dimension?
Think it through first, then pick an option.
- a pressure and stress
- b work and power
- c electric current and luminous intensity
- d acceleration and speed
Answer and explanation
Correct answer: a pressure and stress
Right. Both are force ÷ area, with the dimension ML⁻¹T⁻² and the unit Pa.
Why the other options are wrong
- b work and power: Work is ML²T⁻² and power is ML²T⁻³; power divides by time once more, so they are not the same.
- c electric current and luminous intensity: These are two different base quantities, so their dimensions differ.
- d acceleration and speed: Acceleration is LT⁻² and speed is LT⁻¹; they are not the same.
More board questions on this topic
- The quantity with the dimension ML⁻¹T⁻² is- which of the following is…
- Which two quantities have the same unit?
- What is the dimension of stress?
- What is the dimension of stress?
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