Question

science.

1.What are the parts of shadow?
2.What are luminous object?
3.What is plane mirror?​

Answer 1

Answer:

1. The umbra, penumbra and antumbra are three distinct parts of a shadow, created by any light source after impinging on an opaque object. Assuming no diffraction, for a collimated beam (such as a point source) of light, only the umbra is cast.

2. Luminous objects are objects that generate their own light. Illuminated objects are objects that are capable of reflecting light to our eyes. The sun is an example of a luminous object, while the moon is an illuminated object. During the day, the sun generates sufficient light to illuminate objects on Earth.

3. A plane mirror is a mirror with a flat (planar) reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. The angle of the incidence is the angle between the incident ray and the surface normal (an imaginary line perpendicular to the surface).

Answer 2

Explanation:

$\huge\purple{★QUESTIONS★}$

1. What are the parts of shadow.‽
2. .What are luminous object?
3. .What is plane mirror?

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$\huge\red{《ANSWER》}$

1. The umbra, penumbra and antumbra are three distinct parts of a shadow, created by any light source after impinging on an opaque object.
2. Luminous objects are objects that generate their own light. Illuminated objects are objects that are capable of reflecting light to our eyes. The sun is an example of a luminous object, while the moon is an illuminated object. During the day, the sun generates sufficient light to illuminate objects on Earth.
3. plane mirror is a mirror with a flat reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. The angle of the incidence is the angle between the incident ray and the surface normal.