  Easy Questions

## Ray Optics And Optical Instruments

- It is always better to start confident. Let's practice easy questions to serve the purpose
1
The image of our face in a plane mirror is
A
real
B
magnified
C
diminished
D
Same as the size of the object
Differentiate between regular and diffused reflection. Does diffused reflection mean the failure of the laws of reflection ?
Which are the two convenient rays that are chosen to construct the image by a spherical mirror for a given object ? Explain with the help of suitable ray diagrams.
A ray of light strikes a flat block of glass of thickness at an angle of with the normal. Trace the light beam through the glass and find the angles of incidence and refraction at each surface.
Distinguish between:
Convex mirror and concave mirror
The relation between for a mirror is given by
A
B
C
D
A ray of light traveling in the air is incident on the plane of a transparent medium. The angle of the incident is 45 and that of refraction is 30. Find the refractive index of the medium.
A
2
B
C
D
A ray of light falls on the surface of a spherical glass paperweight making an angle with the normal and is refracted in the medium at angle . The angle of deviation of the emergent ray from the direction of incident ray is :
A
B
C
D
a. Draw the given diagram and label the following in the diagram.
i) Incident ray
ii) Refracted ray
iii) Emergent ray
iv) Angle of refraction
v) Angle of deviation
vi) Angle of emergence
b. The refractive index of diamond is 2.42. What is the meaning of this statement in relation to the speed of light?
In which of the following instruments is final image erect?
A
Simple mircoscope
B
Compound mircoscope
C
Astronimical telescope
D
None of the above