What is the unit of magnitude of Planck's constant?

Which of the following is a derived unit?A. MeterB. KilogramC. NewtonD. SecondWhat is the standard unit of electric current?A. VoltB. AmpereC. OhmD. JouleThe volume of a cube is 125 cm³. What is the length of one side of the cube?A. 5 cmB. 10 cmC. 15 cmD. 25 cmWhich of the following quantities is a scalar?A. VelocityB. ForceC. MassD. AccelerationThe dimensional formula of Planck's constant (h) is:A. [ML²T⁻¹]B. [MLT⁻²]C. [M²L²T⁻³]D. [ML²T⁻²]Section B: Short Answer Questions (2 marks each)Explain the difference between precision and accuracy in measurements.A car travels a distance of 240 km in 4 hours. Calculate its average speed.Convert 2.5 m³ into cubic centimeters (cm³).Why is a vernier caliper more accurate than a simple meter scale for measuring lengths?If the mass of an object is 20 kg and its volume is 4 m³, calculate its density.Section C: Long Answer Questions (5 marks each)(a) Explain the principle of the vernier caliper with a labeled diagram.(b) If the main scale reading is 2.3 cm and the vernier scale reading is 0.07 cm, what is the measured length?(a) Define one light year. Express it in kilometers.(b) The nearest star to Earth, Proxima Centauri, is about 4.22 light years away. Calculate this distance in kilometers.(a) State and explain the three laws of motion given by Sir Isaac Newton.(b) A force of 50 N is applied to an object with a mass of 10 kg. Calculate the acceleration of the object.(a) Differentiate between scalars and vectors with examples.(b) A car travels 150 km due north and then 200 km due east. Determine the total displacement of the car.(a) Define the term 'dimensional analysis'. Explain its importance in solving problems in physics.(b) Using dimensional analysis, derive the formula for the period of a pendulum.

Identify the dimensional constant. A Force B Momentum C Planck’s constant D Specific gravity

The slope of the stopping voltage versus frequency graph was found to be m = 3.6 x 10-15 Vs. Use this value to determine Planck's constant.Express you answer to 3 significant figures in SI units. (Use a value of e = 1.6 x 10-19C for the charge on an electron.)Entering numbers in scientific notation: Example: 1.45 x 10-9 should be entered as 1.45E-9Answer:

What is the unit of power expressed in fundamental SI units?

Unit of Hamaker constant is: