Observe the following figure: When the torch is lit as shown, which of the following should be object A to get the patch of light at B?
When the torch is lit as shown, which of the following should be the object A to get the patch of light at B?
Question 1
Observe the picture given in Fig. carefully. A patch of light is obtained at B, when the torch is lighted as shown. Which of the following is kept at position A to get this patch of light?
(a) A wooden board
(b) A glass sheet
(c) A mirror
(d) A sheet of white paper