A loaded spring is set in simple harmonic motion, the force that tends to restore the load to its equilibrium position is

The induced current in a coil always flows in a direction so as to oppose the change that causes it. This statement is known as

The bob of a simple pendulum takes 8s to complete 10 oscillations. Determine the frequency of oscillation of the bob.

Which of the following pairs of concepts constitutes complementary variables as expressed by the Heisenberg uncertainty principle?