Characteristics of mirror image: virtual (an image which cannot be formed on a screen) same size as object laterally inverted upright distance between object and mirror is equal to distance between image and mirror One difficulty faced by students in such experiment is how to insert the pins with respect to the image of the object. So do watch the video to learn the techniques, which is applicable for refraction too.

Examples of reflection ray diagrams covered in the video.

Though the graph is a height-time graph, it is similar to a distance-time graph. Questions: 2017PPp1q3 and 2020PPp1q5 Answer: Option D

Instead of the usual ball release from rest, this question states that the ball has an initial velocity greater than terminal velocity in the air. There are a few scenarios which are possible. object moving in vacuum at high speed entering air (e.g. meteor entering Earth's atmosphere) object is thrown down from a high altitude at high speed parachute is opened and the speed decreases till terminal velocity stone falling with high speed in air hits the water and speed decreases etc View the video for the explanation. Question : 2024PPp1q6 Answer: Option A