Monohar Pandey Solutions for Exercise 3: Exercise 3

Assertion (A) The energy (E) and momentum (p) of a photon are related E by p=$\frac{E}{c}$
Reason (R) The photon behaves like a particle.

The length of a second pendulum (g = 980 cm/s² ) is nearly

A progressive wave or travelling wave_____.

Velocity of wave in a string (thread) is

Which is the correct order of wave lengths of wave?

Given,

A-shows the wavelength for radio wave.
M-shows the wavelength for microwave
V-shows the wavelength for visible light
U-shows the wavelength for ultraviolet light

In an electromagnetic wave:
$1.$Electric field and magnetic field are parallel to each other.
$2.$Electric field and magnetic field are perpendicular to each other.
$3.$ Electric field and magnetic field both are perpendicular to direction to propagation of wave.

Two men are standing at a distance of $100$ m. In the middle of the distance between them the$10$ m gap is vacuum, one calls another (second)_____________________.

Which one of the following statements is not correct?