Periscope

Q. Define the working principle of a periscope using a diagram.
$\left[4\text{marks}\right]$

Q.

The phenomenon of multiple reflections is the working principle of which object?

1. Telescope

2. Periscope

3. Microscope

4. Binoculars

Q. Which among the following is use of periscopes?

1. It is used used in the submarines for observation purpose.
2. It is used to make symmetric patterns.
3. It is usedto magnify the view of object.
4. It is used for looking at things that are extremely far.

Q.

When a light ray is incident on one of the two mirrors that are placed at right angle to each other, what can be said about the final reflected ray? It is given that the plane of incident ray and the the two normals is same.

1. It is parallel to the incident ray and is in the same direction as that of the incident ray

2. It is parallel to the incident ray and is in the opposite direction as that of the incident ray

3. It is perpendicular to the incident ray and is in the same direction as that of the incident ray

4. It is perpendicular to the incident ray and is in the opposite direction as that of the incident ray

Q. The device which is used in submarianes to see the objects which are above the surface of water is:

1. Periscope
2. Telescope
3. Kaleidoscope
4. Microscope

Q. Periscope is made using ______ mirror.

1. concave
2. diverging
3. convex
4. plane

Q. In a simple periscope, the two plane mirrors are to each other.

1. parallel
2. perpendicular
3. at ${45}^{\circ }$

Q. The image of the word EARTH as seen from the periscope would appear as:

1. 
2. 
3. 
4. 

Q. Which kind of mirrors are used in making a periscope?

1. Concave
2. Diverging
3. Plane
4. Convex

Q. In a simple periscope, the two plane mirrors are to each other.

1. parallel
2. perpendicular
3. at ${45}^{\circ }$