PRACTICE QUESTIONS (CLASSROOM WING)
Subject Experts Physics Solutions for Exercise - PRACTICE QUESTIONS (CLASSROOM WING)
Simple step-by-step solutions to PRACTICE QUESTIONS (CLASSROOM WING) questions of Light from Pearson IIT Foundation Physics. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.
Questions from PRACTICE QUESTIONS (CLASSROOM WING) with Hints & Solutions
A ray of light is incident on a plane mirror, making an angle 'q' with the surface of the mirror. Arrange the following steps in sequential order to calculate the angle between the incident light ray and the reflected light ray.
(A) Draw a normal line on the plane mirror at the point of incidence of the light ray.
(B) Note down the angle between the plane mirror and the incident light ray.
(C) The sum of the angle of incidence and the angle between the plane mirror and the incident ray is 90°. Determine the angle of incidence.
(D) From the laws of reflection, the angle of incidence is equal to the angle of reflection. Then the sum of the angle of incidence and the angle of reflection gives the angle between the incident light ray and the reflected light ray.
Write the following steps in sequential order to determine the nature of the image formed by a concave mirror when an object is placed between the pole and the principal focus of the mirror, with the help of a ray diagram.
(A) Draw two incident light rays, one parallel to the principal axis and the other coming from the centre of curvature and draw the paths of the reflected light rays.
(B) The reflected light rays are diverging. So, draw the extended lines till they intersect.
(C) Draw a concave mirror and mark the pole, the principal focus, and the centre of curvature of the mirror.
(D) Mark the image at the point of intersection of the extended light rays and write the nature of the image.
(E) Draw the principal axis and mark the position of the object on the principal axis between the pole and the principal focus.
The length of the straight line joining the centre of curvature and any point on the surface of a spherical mirror is the _____ of the mirror.
When electricity is allowed to pass through the filament, it emits _____energy.
The angle of deviation of a light ray reflected by a plane mirror is . The angle of reflection is _____.
The number of images of an object placed between two plane mirrors placed parallel to each other is _____.
Choose the correct statement from the following.
When the light rays appear to be coming out of a point, then we call them a _____ beam of light.
