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Two plane mirrors are inclined to each other at 70 degree. A ray of light is incident on one mirror . The ray will undergo A totat deviation of&?
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Two plane mirrors are inclined to each other at 70 degree. A ray of li...
140 degrees.

When a ray of light is incident on a plane mirror, it reflects back at the same angle as the incident angle. Therefore, the angle of incidence on the first mirror will be 70 degrees, and the angle of reflection will also be 70 degrees.

Now, the reflected ray will strike the second mirror. Again, the angle of incidence will be 70 degrees, and the angle of reflection will also be 70 degrees.

Since the two mirrors are inclined to each other at 70 degrees, the total deviation of the ray will be twice the angle of inclination, which is 2 x 70 = 140 degrees.

Therefore, the ray of light will undergo a total deviation of 140 degrees.
Community Answer
Two plane mirrors are inclined to each other at 70 degree. A ray of li...
Total deviation 220 degree
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Two plane mirrors are inclined to each other at 70 degree. A ray of light is incident on one mirror . The ray will undergo A totat deviation of&?
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