33 solutions available
Question 1Write true or false for each statement:(a) The image formed by a plane mirror is real.(b) When a light ray is reflected from a wall, the...
Question 2Fill in the blanks:(a) Angle of incidence = ...............(b) The incident ray, the reflected ray and the normal lie ...............(c)...
Question 4dThe angle of incidence on a plane mirror is 30°. The angle of reflection will be:30°60°15°0°
Question 3Explain the following terms:Incident rayReflected rayAngle of incidenceAngle of reflectionNormal
Question 4Draw a diagram showing the reflection of a light ray from a plane mirror. Label on it the incident ray, the reflected ray, the normal, the...
Question 5State the two laws of reflection of light.
Question 6Describe an experiment to verify the laws of reflection of light.
Question 8Draw a diagram to show the reflection of a light ray incident normally on a plane mirror.
Question 9The diagram shows an incident ray AO and the reflected ray OB from a plane mirror. The angle AOB is 30°. Draw normal on the plane mirror at...
Question 10In the following diagrams, measure and write the angle of incidence and draw the reflected ray in each case.
Question 11The diagram shows an incident ray AO and the normal ON on a plane mirror. Draw the reflected ray. State the law you use to draw the...
Question 12The following diagram shows an incident ray AO and the normal ON on a plane mirror. Find the angle of incidence and angle of reflection.
Question 13State in words, how do you find the location of image of an object formed by a plane mirror.
Question 14Draw a ray diagram showing the formation of image of a point object by a plane mirror.
Question 15The following diagram shows a point object O placed in front of a plane mirror. Take two rays from the point O and show how the image of O...
Question 16State four characteristics of the image formed by a plane mirror.
Question 17How is the position of image formed by a plane mirror related to the position of the object?
Question 18You are standing at a distance 2 metre from a plane mirror.(a) What is the distance of your image from the mirror?(b) What is the distance...
Question 19What is meant by lateral inversion of an image in a plane mirror? Explain it with the help of a diagram.
Question 20Write down the letter C and I as seen in a plane mirror?
Question 21What is irregular reflection? Give an example.
Question 22How do we see objects around us?
Question 23State two uses of a plane mirror.
Question 24Can light travel in vacuum?
Question 25State the speed of light in:(a) air(b) glass
Question 26State whether light slows down or speeds up in the following cases:(a) Light going from air to glass.(b) Light going from glass to...
Question 27What are primary colours? Name the three primary colours.
Question 28What are secondary colours? Name the three secondary colours.
Question 29Fill in the blanks with the appropriate colour:(a) Blue + ................ = Cyan(b) Red + Blue + ..................... = White(c) Red +...
Question 30The leaves appear green when seen in white light. Give a reason.
Question 31A rose appears red in white light. How will it appear in:(i) green light,(ii) red light?Give a reason for each of your answers.
Question 32Why does a piece of paper appear white in sunlight? How would you expect it to appear when viewed in red light?
Question 33A piece of paper appears black in sunlight. What will be its colour when seen in red light?