Question 1 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb8af59b460d7261ec56.PNG ' /> In the above figure, What are the characteristics of the image formed?

Question 2 :
It was observed that when the distance between an object and a lens decreases, the size of the image increases. What is the nature of this lens ?

Question 3 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbecf59b460d7261ecce.jpg' /> A person takes a convex lens and fixes it on a stand. He places it on a table. Also, he places a lighted candle at a distance of about 50 cm from the lens as shown in the figure. The image of the candle is obtained on a paper screen placed on the other side of the lens. He moves the screen towards or away from the lens to get a sharp image of the flame. What kind of image will he get?

Question 4 :
David is observing his image in a plane mirror. The distance between the mirror and his image is 4 m. If he moves 1 m towards the mirror, then the distance between David and his image will be

Question 5 :
<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 6 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb8df59b460d7261ec59.PNG ' /> In the above figure, What are the characteristics of the image formed ?

Question 8 :
In automobiles _______ mirror is used as Side mirror to get real view to see the traffic coming behind.

Question 10 :
A virtual image larger than the object can be produced by a-

Question 11 :
If you keep on decreasing the distance between the object and the lens, will you still be able to obtain the image on the screen ?

Question 13 :
<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 14 :
An image formed by a concave __________ cannot be obtained on a screen.

Question 16 :
The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2 m/s. The driver sees in his rear view mirror the image of a truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be:

Question 17 :
Which mirror is used as a reflector in search light and headlights of the automobiles?

Question 20 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbddf59b460d7261ecba.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. Does he find any change in the direction of reflected light?

Question 21 :
The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 2 m/s. The driver sees in his rear view mirror the image of a truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be

Question 24 :
<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 26 :
_______ image is formed when the reflected rays actually meet and is obtained on a screen.

Question 27 :
Give one use each of a concave and a convex mirror.

Question 28 :
We can obtain an enlarged and erect image by a convex mirror.

Question 29 :
The outer shinning surface of a round bottom steel bowl acts as a ___ mirror.

Question 30 :
Image formed by a convex ____ is always virtual and smaller in size.

Question 31 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbe5f59b460d7261ecc5.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. Did he get an image larger in size than the object?

Question 33 :
What type of mirror is used as a looking glass, as a reflector in solar cookers?

Question 34 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb88f59b460d7261ec53.JPG' /> In the above figure, 6 is ______ in colour.

Question 35 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb84f59b460d7261ec4e.JPG' /> In the above figure, 1 is ____ in colour.

Question 36 :
Image formed by a convex __________ is always virtual and smaller in size.

Question 38 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbe0f59b460d7261ecbe.jpg' /> A Person places a lighted candle in front of a plane mirror. He tries to see the flame of the candle in the mirror. It appears as if a similar candle is placed behind the mirror. The candle, which appears behind the mirror, is the image of the candle formed by the mirror as shown in the above figure. The candle itself is the object. Now, he moves the candle to different positions in front of the mirror. He observes the images in each case. Now, he places the vertical screen in front of the mirror. Can you get the image on the screen now?

Question 39 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb85f59b460d7261ec50.JPG' /> In the above figure, 3 is _______ in colour.

Question 40 :
If the reflecting surface is on the outside, the mirror is called ____.

Question 41 :
Image that cannot be formed on a screen is known as _________.

Question 42 :
Which of the following can be used to form a real image ?

Question 43 :
An image which can be obtained on a screen is called a __________ image.

Question 44 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cb82f59b460d7261ec4b.JPG' /> In the above figure, 5 is _____ in colour

Question 45 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbdff59b460d7261ecbd.jpg' /> A Person places a lighted candle in front of a plane mirror. He tries to see the flame of the candle in the mirror. It appears as if a similar candle is placed behind the mirror. The candle, which appears behind the mirror, is the image of the candle formed by the mirror as shown in the above figure. The candle itself is the object. Now, he moves the candle to different positions in front of the mirror. He observes the images in each case. Will the images be upright in each case?

Question 46 :
An image formed by a lens is erect. Such an image could be formed by a :

Question 47 :
Boojho made light from a laser torch to fall on a prism. Will he be able to observe a band of seven colours ?

Question 50 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1cbe6f59b460d7261ecc6.jpg' /> A person takes a stainless steel spoon. He brings the outer side of the spoon near his face and looks into it as shown in the above figure. Will he see his image in it?