# Mirror Mirror Relativity

Can you see your image when you are travelling at the speed of light? Visitors and students are requested to respond and answer via comments. Einstein’s Theory of relativity says:”The Laws of Physics are the same in any Inertial Frame of Reference.”

# Numerical Problems From Optics

When an object of height 4cm is placed at 40cm from a mirror the mirror forms the image on the object itself. If the height of the image is equal to the height of the object. Find out the focal length of the mirror and identify the mirror. A convergent beam of light passes through … Continue reading Numerical Problems From Optics

# Numerical problem from image formation by spherical mirror – optics

An object is placed 18cm in front of a spherical mirror. if the image formed is 4cm to the right of the mirror calculate the focal length and radius of curvature? what is the nature of the mirror? (The question was posted by Anisha)

# Numerical Problems from Light

Madhu sent us the following problems from "Light". Visitors can attempt to solve the problems by quoting the question number. Most of the questions below are based on mirror formula and lens formula.   Mirror Formula   Lens Formula   Now try solving these questions/problems. If in doubt or not able to solve the problems, … Continue reading Numerical Problems from Light

# A Question on Evaporation

Arunabh Arun sent this problem. (Click on the image to see the enlarged version.)

# A problem from light for class X

Sudhanshu Misra posted: "An object is placed at a distance of 10cm from convex mirror of focal length15cm; find the position and nature of image?" Ans: f= 15 cm u=-10 cm v=? substitute the values in the relation and get the value of v as 6 cm The image is virtual, erect and diminished

# Commonly asked questions for AISSE (CLASS X CBSE) Physics (Set – 1)

(Collected from Previous Board Question Papers and CBSE Sample Papers andGuess Papers made by experienced teachers) Where does centre of curvature of a spherical mirror lie? Name two important properties of a magnet. How is 1 ohm related to ampere and volt? Draw neat ray diagrams to illustrate the formation of images due to a beam of light incident … Continue reading Commonly asked questions for AISSE (CLASS X CBSE) Physics (Set – 1)