Multiple Choice Questions (MCQs)

An illuminated object is placed at a distance of $20 \mathrm{cm}$ from a converging lens of focal length $15 \mathrm{cm}$. The image obtained on the screen is:

An object is placed between $f$ and $2f$ of a convex lens. Which of the following statements correctly describes its image?

Which of the following can make a parallel beam of light when light from a bulb falls on it?

In order to obtain a real image twice the size of the object with a convex lens of focal length $15 \mathrm{cm}$, the object distance should be:

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?

A convex lens of focal length $8 \mathrm{cm}$ forms a real image of the same size as the object. The distance between the object and its image will be:

A virtual, erect and magnified image of an object is to be obtained with a convex lens. For this purpose, the object should be placed:

A burning candle whose flame is $1.5 \mathrm{cm}$ tall is placed at a certain distance in front of a convex lens. An image of candle flame is received on a white screen kept behind the lens. The image of flame also measures $1.5 \mathrm{cm}$. If $f$ is the focal length of convex lens, the candle is placed: