Bohr's model and more...

Question

True or False:

1. For a transverse wave the particles of the medium are displaced parallel to the direction of wave travel (T,F)
2. The speed of a wave within a given medium can be increased by increasing the frequency of the wave (T,F)
3. The electrostatic force, the gravitational force and magetostatic forces depend on the inverse squared distance (1/r2 ) (T,F)
4. In Bohr’s model of hydrogen atom the force that keeps the electron in orbit around the nucleus is the electrostatic force(T,F)

Answer 1

1- ( F) its displaced perpendicular .

2- ( F ) The speed of the wave is dependent on the properties of the medium .

3 - (T)

4- ( T )