A convex mirror is used
- Aas a shaving mirror
- Bas a head mirror by a dentist
- ✓as a rear view mirror by driver
- Das a reflector in torch
Answer: C.
View full solution →Question types
Light Energ question types
88 questions across 7 question groups — pick any mix to generate a PHYSICS paper with step-by-step answer keys.
88
Questions
7
Question groups
5
Question types
01
MCQ
10 Q→02[1 Mark Question Answer]
3 Q→03[2 Mark Question Answer]
13 Q→04[3 Mark Question Answer]
25 Q→05[5 Mark Question Answer]
12 Q→06fill in the blanks.
11 Q→07TRUE / FALSE
14 Q→Sample Questions
Light Energ questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
The image formed by a concave mirror is of the same size as the object, if the object is placed
- Aat the focus
- Bbetween the pole and focus
- Cbetween the focus and centre of curvature
- ✓at the centre of curvature
Answer: D.
View full solution →The image formed by a convex mirror is
- ✓erect and diminished
- Berect and enlarged
- Cinverted and diminished
- Dinverted and enlarged.
Answer: A.
View full solution →If the radius of curvature of a concave mirror is $20 \ cm,$ its focal length is:
- ✓$10 \ cm$
- B$20 \ cm$
- C$40 \ cm$
- D$80 \ cm$
Answer: A.
View full solution →A ray of light passing through centre of curvature of a spherical mirror, after reflection
- Apasses through the focus
- Bpasses through the pole
- Cbecomes parallel to the principal axis
- ✓retraces its own path.
Answer: D.
View full solution →State the kind of mirror used $(a)$ by a dentist, and $(b)$ as a street light reflector.
View full solution →Name the mirror which always forms an erect and virtual image. What is the size of the image as compared to that of the object?
What is a spherical mirror?
What do you understand by refraction of light?
Name the kind of mirror used to obtain
$(a)$ a real and enlarged image
$(b)$ a virtual and enlarged image
$(c)$ a real and diminished image, and
$(d)$ a virtual and diminished image.
View full solution →$(a)$ a real and enlarged image
$(b)$ a virtual and enlarged image
$(c)$ a real and diminished image, and
$(d)$ a virtual and diminished image.
Out of air and glass, which is optically rarer? Give reason.
State two uses of a convex mirror.
State two uses of a concave mirror.
A ray of light falls normally on a glass slab. What is the angle of incidence?
Draw a ray diagram to show that the depth of a vessel containing water when seen from above, appears to be less than its real depth.
A driver uses a convex mirror as a rearview mirror. Explain the reason with the help of a ray diagram.
How can a concave mirror be used to obtain a virtual image of an object ? Draw a diagram to illustrate your answer.
Name the mirror which forms an erect, virtual and enlarged image of an object. What is the position of object relative to the mirror?
Define the following terms : Incident ray, Refracted ray, Angle of incidence, Angle of refraction.
Describe an experiment to show that a light ray bends when it passes from one transparent medium into another transparent medium.
Draw separate diagrams for the formation of virtual image of an object by convex mirror. State the difference between concave and convex image.
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.
Complete the following diagrams in figure by drawing the reflected rays for the incident rays $1$ and $2$ if $F$ is the focus and $C$ is the centre of curvature.
View full solution →A $.........$ mirror always forms a virtual image.
View full solution →A concave mirror forms a virtual image for an object placed $.........$
View full solution →The angle of incidence for a ray of light passing through the centre of curvature of a spherical mirror is $.........$
View full solution →Radius of curvature of a spherical mirror is $.........$ its focal length.
View full solution →A $.........$ mirror is obtained on silvering the outer surface of a part of a hollow glass sphere.
View full solution →Image is formed by a mirror due to refraction of light.
A virtual image formed by a spherical mirror is always erect and situated behind the mirror.
A concave mirror converges the light$-$rays, but a convex mirror diverges them.
View full solution →The focal length of a convex mirror is equal to its radius of curvature.
A convex mirror is used as a shaving mirror.
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