Join the point of incidence (call it A) to the mid point of the second mirror (call it B) Let the corner point be called C. Once you join A and B you know that: tan ?BAC = 14/11.5 = 1.2174 ? ?BAC = tan ?? (1.2174) = 50.6 ? Angle of incidence is angle made with the normal at the point of incidence = (90 - 50.6) = 39.4 ? Angle of incidence at the first mirror will this ray strike the midpoint of the second mirror (which is 28.0cm long) after reflecting from the first mirror = 39.4 ?
115) Two plane mirrors intersect at right angles. A laser beam strikes the first of them at a point 11.5 cm from their point of intersection, as shown in figure For what angle of incidence at the first mirror will this ray strike the midpoint of the second mirror (which is 28.0 cm long) after reflecting from the first mirror?
Answer is:
39.4?
Explanation:
Related Optics MCQ with Answers
Answer is:
9I and I
Explanation:
By I(max) = I1 + I2 + 2?I1 x I2 =>I(max) = 0.I + 0.4I + 2?(0.I x 0.4I) =>I(max) = 0.9I By I(min) = I1 + I2 - 2?I1 x I2 =>I(min) = 0.I + 0.4I - 2?(0.I x 0.4I) =>I(min) = 0.I
Answer is:
I0/4
Explanation:
the positions of minimum intensity will not be completely dark is I0/4
Answer is:
using white light instead of monochromatic light
Explanation:
In a young's double slit experiment, the central bright fringe can be identified by using white light instead of monochromatic light
Answer is:
the positions of minimum intensity will not be completely dark
Explanation:
In a young's double slit experiment, if the slits are of unequal width the positions of minimum intensity will not be completely dark.