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The key is to recognize that "the angle of INCIDENCE is equal to the angle of REFLECTION", for an 'Elastic' collision. So the answer is 20 degrees.
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Light strikes a mirror at 20 degrees to the normal what will the angle of reflection be?
The reflection angle will also be 20 degrees from the normal on the other side of the normal in the same plane.
How many images are formed when two plane mirrors tilted an angle 72 degrees?
20
Who gave laws of reflection?
Specular reflection is the mirror-like reflection of light(or of other kinds of wave) from a surface, in which light from a single incoming direction (a ray) is reflected into a single outgoing direction. Such behavior is described by the law of reflection, which states that the direction of incoming light (the incident ray), and the direction of outgoing light reflected (the reflected ray) make the same angle with respect to the surface normal, thus the angle of incidence equals the angle of reflection ( in the figure), and that the incident, normal, and reflected directions are coplanar. This behavior was first discovered through careful observation and measurement by Hero of Alexandria (AD c. 10-70).
What is argon at 20 degrees?
At 20 degrees Celsius or 20 degrees Fahrenheit it is a gas, at 20 degrees Kelvin it is a solid.
When the angle of refraction is 20 degrees what is the angle of incidence?
It depends what substance the refraction is taking place in. You need to know the refractive index, n then you can use the formula (sin(i))/(sin(r)) = n so sin(i) = n * sin(20) and i = arcsin ( n*sin(20) ) or, equivalently: i = sin^-1 ( n*sin(20) ) If you were using a glass block block, then n=1.5 and i = arcsin (1.5*sin(20)) = 30.86588247 = 30.9 degrees (3 s.f.)
Light strikes a mirror at 20 degrees to the normal what will the angle of reflection be?
The reflection angle will also be 20 degrees from the normal on the other side of the normal in the same plane.
What angle is 20 degrees?
An angle whose measure is 20 degrees!
How do you draw an angle of 20 degrees with a compass and a ruler?
to construct an angle of 20 degrees all you have to do is to trisect an angle of 60degrees
If angle A in a triangle is 60 degrees and angle B is 20 degrees what is the degree of angle C?
100
What type of triangle has an angle that measures 20 degrees and an angle that measures ninety degrees?
It is a right angle triangle and its 3rd angle is 70 degrees.
What is the measure of an interior angle with an exterior angle o 20 degrees?
It is: 160 degrees
Angle measures 17 degrees what is the measurement of the angle?
Between 15 and 20 degrees...
The exterior angle of a base angle in an isosceles triangle is 100 degrees What is the measure of the vertex angle?
20 degrees
What is the measure of an angle in a regular 18-gon?
Exterior angle = 20 degrees Interior angle = 160 degrees
What is the complimentary measure of an angle to a 20 degree angle?
90 - 20 = 70 degrees.
What is the measure of the interior angle and the exterior angle of a regular polygon with 20 sides?
Each exterior angle measures 20 degrees Each interior angle measures 160 degrees
What type of triangle has a angle that measures 20 degrees and 90 degrees?
The 3rd angle is 70 degrees which would form a right angle triangle.
