Question 1 :
A convex lens of focal length 20 cm can produce a magnified virtual as well as real image. Where shall the object be placed for obtaining VIRTUAL image?

Question 2 :
You are provided with two lenses of focal length 20 cm and 40 cm respectively. Which lens will you use to obtain more convergent light?

Question 3 :
In which of the following, the image of an object placed at infinity will be highly diminished and point sized?

Question 4 :
Where will the image form by a convex mirror, when an object is placed at infinity.

Question 5 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cef273b230584979b6f.PNG' /> <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61cc185478c526e972caea29.PNG' /> In the above images, the first image is the ray of light incident on a convex lens and the second image is the complete path of the ray. Is the second image correct depiction of the path?

Question 6 :
A student focussed the image of a candle flame on a white screen using a convex lens. He noted down the position of the candle screen and the lens as under: Position of candle = 12.0 cm, Position of convex lens = 50.0 cm, Position of the screen = 88.0 cm What is the focal length of the convex lens?

Question 7 :
What type of image will form by a concave lens, when an object is placed beyond twice the focal length of the lens.

Question 8 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19ce8273b230584979b66.PNG' /> In the above image, the Beams of light are incident through the holes A and B and emerge out of box through the holes C and D respectively as shown. Which of the following could be inside the box?

Question 9 :
What type of image will form by a convex lens, when an object is placed between optical centre and focus of the lens.

Question 10 :
Where will the image form by a convex lens, when an object is placed at the focus of the lens.