Question 1 :
A person stands in front of a plane mirror and looks at his image. Now, he touches his right ear. Which ear does his hand touch in the image?

Question 3 :
An image which can be obtained on a screen is called a __________ image.

Question 4 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb87f59b460d7261ec52.JPG' /> In the above image, 5 is ______ in colour.

Question 5 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbebf59b460d7261eccd.jpg' /> A person takes a convex lens or magnifying glass and puts it in the path of sunrays. Then, he places a sheet of paper as shown in the figure. He adjusts the distance between the lens and the paper till he gets a bright spot on the paper. Now, he holds the lens and the paper in this position for a few minutes. Does the paper begin to burn?

Question 6 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbdff59b460d7261ecbc.jpg' /> A person takes a torch covers its glass with a chart paper which has three narrow slits as shown in Figure above. He spreads a sheet of chart paper on a smooth wooden board and fixes a plane mirror strip vertically on the chart paper. Now, he directs the beam of light on the mirror from the torch with slits. He places the torch in such a way that its light is seen along the chart paper on the board. Now, he adjusts its position so that the light from the torch strikes the plane mirror at an angle. Now, he moves the torch slightly to either side. Next, he looks into the mirror along the direction of the reflected light. Will he see the slits in the mirror?

Question 7 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb8ff59b460d7261ec5c.JPG' /> In the above figure, what is the nature of the lens?

Question 8 :
The distance between an object and a convex lens is changing. It is noticed that the size of the image formed on a screen is decreasing. Is the object moving in a direction towards the lens or away from it?

Question 10 :
The outer shinning surface of a round bottom steel bowl acts as a ___ mirror.

Question 11 :
The inner surface of the reflector of a torch acts as a ___ mirror.

Question 13 :
Which one of the following is used as rear view mirror in cars and scooters?

Question 14 :
What type of mirror is used as a side mirror in a scooter?

Question 15 :
The distance between the optical centre and the focus of a lens is called the ___ of the lens.

Question 17 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbe8f59b460d7261ecc9.jpg' /> A person fixes a convex mirror on a stand and places it on a table as shown in the figure. He pastes a piece of white paper on a cardboard sheet which acts as a screen. He also keeps a lighted candle on the table at a distance of about 50 cm from the mirror and tries to obtain the image of the flame on the screen. For this, he moves the screen till a sharp image of the flame is obtained. Now, he moves the candle towards the mirror and places it at different distances from it. Could he get a real image at any distance of the object from the convex mirror?

Question 18 :
Image formed by a convex ____ is always virtual and smaller in size.

Question 20 :
Mirror which has reflecting surface curved outwards is called __________ .

Question 21 :
We can obtain a real, enlarged and inverted image by a concave mirror.

Question 22 :
When a ray of light falls on the surface of any mirror it bounces back in the same medium. This is called

Question 23 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb83f59b460d7261ec4d.JPG' /> In the above figure, 7 is _____ in colour.

Question 24 :
What type of mirror is used as a looking glass, as a reflector in solar cookers?

Question 25 :
Which mirror is used by doctors to examine certain body parts like ear nose, throat etc.