Question 1 :
What type of image will form by a convex lens, when an object is placed at twice the focal length of the lens.

Question 2 :
What type of image will form by a concave mirror, when an object is placed between pole and focus of the mirror.

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 lens, when an object is placed at infinity.

Question 5 :
What type of image will form by a concave mirror, when an object is placed at infinity.

Question 6 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19ce7273b230584979b65.PNG' /> In the above image, the light ray enters from medium A to medium B as shown. The refractive index of medium B relative to A will be :

Question 8 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19cef273b230584979b6e.PNG' /> <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61cc185378c526e972caea27.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 9 :
Under which of the following conditions a concave mirror can form an image larger than the actual object?

Question 10 :
Where will the image form by a concave mirror, when an object is placed at centre of curvature of the mirror.

Question 11 :
An object 5.0 cm in length is placed at a distance of 20 cm in front of a convex mirror of radius of curvature 30 cm. Find the size of the image.

Question 12 :
An object, 4.0 cm in size, is placed at 25.0 cm in front of a concave mirror of focal length 15.0 cm. Find the nature of the image.

Question 13 :
What would be the nature of image formed by concave lens when the object is placed between infinity and optical centre O of the lens?

Question 14 :
The radius of curvature of a spherical mirror is 20 cm. What is its focal length?

Question 15 :
The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object?

Question 16 :
The reflecting surface of a spherical mirror forms a part of a sphere. This sphere has a centre. This point is called the___.

Question 17 :
What would be the size of image formed by concave mirror when the object is placed between principal axis and focus?

Question 18 :
What would be the nature of image formed by convex lens when the object is placed at infinity?

Question 19 :
What would be the position of image formed by concave mirror when the object is placed at the centre of curvature?

Question 20 :
An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the nature of the image.