Some problems from geometric optics
Q1) Two mirrors are inclined at an angle \(\alpha\).Light ray is inclined parallel to one og the mirrors.The ray will start retracing its path after third reflection if \(\alpha=\) .The figure is above
Q2) A point object is kept in front of a plane mirror. The plane mirror is doing SHM of amplitude \(2~ cm\).The plane mirror moves along the \(x-axis\) and \(x-axis\) is normal to the mirror.The amplitude of the mirror is such that the object is always in front of mirror.The amplitude of SHM of the image is
Q3) A person's eye is at height of \(1.5~m\). He stands in front of a \(0.3~m\) long plane mirror which is \(0.8~m\) above the ground. the length of the image he sees of himself is
Q4) A person is standing in a room of width \(200~cm\). A plane mirror of vertical length \(10~cm\) is fixed on a wall in front og the person. The person looks into the mirror from distance \(50~cm\).How much width of the wall behind him will he able to see (assume that he uses the full mirror).
Q5) An unnumbered wall clock shows time \(04:25:37\), where \(1st\) terms represent hours,\(2nd\) represent minutes and \(3rd\) represents seconds. What time will its image in a plane mirror show..