The lower and upper fixed point of a thermometer are 30mm and 180mm respectively. Calculate the temperature in degrees Celsius when the thermometer reads 45mm.
A. 10.0°C B. 15.0°C C. 20.0°C D. 30.0°C Correct Answer: Option A A. 10.0°CA body of mass 25kg, moving at 3ms-1 on a rough horizontal floor is at rest after sliding through a distance of 2.50m on the floor. Calculate the co-efficient of sliding friction. [g = 10.0ms-2]
A. 0.09 B. 0.18 C. 0.36 D. 0.54 Correct Answer: Option B B. 0.18The friction which exists between two layers of liquid in relative motion is called?
A. capillarity B. surface tension C. viscosity D. cohesion Correct Answer: Option C C. viscosityWhich of the following statements about a spring balance and/or a chemical balance is not correct?
A. the chemical balance operates on the principle of moments B. the spring balance operates on Hooke’s law C. either may be used to measure the weight of a substance D. the reading of a spring balance changes over the surface of the earth, while that of the...Each of the following physical quantities is classified as a vector or a scalar quantity. Which of the classifications is correct?
A. electric potential (Vector) B. momentum (scalar) C. gravitational field intensity (scalar) D. magnetic flux density (vector) Correct Answer: Option D D. magnetic flux density (vector)Products
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