please see the attached image.

in the fig. an incident ray strikes a concave mirror and gets reflected back.

my question is after striking the mirror which characteristic of the ray will change:

options are given below:

1. intensity of light
2. frequency
3. wavelength
4. velocity of ray of light

please answer to this question as soon as possible.

In the above figure light is reflected from the concave mirror,and in reflection-
1.Frequency
2.Wavelength and
3.Velocity of ray of light
All the above three parameters remain same.But the factor which gets changed on reflection,is intensity of light.It is found that intensity of reflected light in not equal to that of incident light,because some of the light is absorbed by the mirror.Thus option (1).intensity of light gets changed,

Your welcome.