Which three forms of light are invisible light?

a. blue light

b. infrared rays

c. radio waves

d. red light

e. x-rays

(B,C,E). The infrared rays, radio waves and x-rays are forms of light are invisible light.

Explanation:

We know that,

The electromagnetic spectrum shows the wave length of the electromagnetic radiation of visible light.

Human eyes can detect the visible light. The wave length of the visible light is 380 nm to 750 nm. Violet light has low frequency and red light has the high frequency.

Human eyes can't detect the invisible light. Radio waves, X-rays and infrared rays are comes in the invisible light. these wave length is shorter compare to visible light.

The wave length of the Radio waves, X-rays and infrared rays defined as:

Radio waves = 1 mm to 10000 km

X-rays = 0.01 m to 10 nm

Infrared rays = 700 nm to 1 mm

Hence, The infrared rays, radio waves and x-rays are forms of light are invisible light.

answer: b.

explanation:

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force