EASY
10th CBSE
IMPORTANT
Earn 100
Draw a ray diagram to show the formation of a real diminished image of an object by a convex lens. In your diagram, the position of object and image with respect to the principal focus should be shown clearly.
Important Questions on Refraction of Light
EASY
10th CBSE
IMPORTANT
A convex lens has a focal length of . At which of the following position should an object be placed so that this convex lens may act as a magnifying glass?
EASY
10th CBSE
IMPORTANT
Which one of the following materials cannot be used to make a lens?
HARD
10th CBSE
IMPORTANT
A small bulb is placed at the focal point of a converging lens. When the bulb is switched on, the lens produces:
EASY
10th CBSE
IMPORTANT
An illuminated object is placed at a distance of from a converging lens of focal length . The image obtained on the screen is:
EASY
10th CBSE
IMPORTANT
An object is placed between and of a convex lens. Which of the following statements correctly describes its image?
EASY
10th CBSE
IMPORTANT
Which of the following can make a parallel beam of light when light from a bulb falls on it?
EASY
10th CBSE
IMPORTANT
In order to obtain a real image twice the size of the object with a convex lens of focal length , the object distance should be:
MEDIUM
10th CBSE
IMPORTANT
A converging lens is used to produce an image of an object on a screen. What change is needed for the image to be formed nearer to the lens?
