Question

(viii) Which is a device to image the sun?
(a) Plane mirror
(b) Pinhole camera
(c) A straight pipe
(d) Glass slab

Answer 1

Answer:

Pinhole camera

Explanation:

You can easily and safely observe the sun by projecting it through a tiny hole onto a white sheet of paper

Answer 2

(B) Pinhole camera is a device to image the sun.

Definition of Pinhole camera;

Pinhole camera is a simplest camera with no lens. The image formed is always inverted.

Characteristics of pinhole camera;

• Pinhole camera gets the real image on the screen.
• The size of the image is smaller than the actual object and the image is inverted on both the axis x and y axis.
• The image is formed at the rectilinear propagation of the light.

Uses of pinhole camera;

• The size of the holes decides the sharpness of the image on the screen.
• With the increasing size of the image the light will increase by getting the perfect picture.
• While getting the perfect image of the sun a well as recording the movements.

Hence, Pinhole camera gives the image of the sun to get a real image and sharpness of the image.