Whatever be the position of the object, the image formed by a mirror is virtual, erect and smaller than the object. The mirror then must be:
- APlane.
- BConcave.
- ✓Convex.
- DEither concave or convex.
Answer: C.
View full solution →Question types
Reflection of Light question types
231 questions across 7 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
231
Questions
7
Question groups
5
Question types
01
M.C.Q
47 Q→02Answer the following questions:[1 M]
64 Q→03Answer the following questions: [2 M]
51 Q→04Answer the following questions: [3 M]
45 Q→05Answer the following questions: [5 M]
15 Q→06Write True or False
2 Q→07Fill in the blanks.
7 Q→Sample Questions
Reflection of Light questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
The figure given alongside shows the image of a clock as seen a plane mirror. The correct time is: Figure.
- A$2.25$
- B$2.35$
- C$6.45$
- ✓$9.25$
Answer: D.
View full solution →If a magnification of, $-1 ($minus one$)$ is to be obtained by using a converging mirror, then the object has to be placed:
- ABetween pole and focus.
- ✓At the centre of curvature.
- CBeyond the centre of curvature.
- DAt infinity.
Answer: B.
View full solution →The image formed by a concave mirror is real, inverted and of the same size as the object. The position of the object must then be:
- AAt the focus.
- BBetween the centre of curvature and focus.
- ✓At the centre of curvature.
- DBeyond the centre of curvature.
Answer: C.
View full solution →The image formed by a concave mirror is virtual, erect and magnified. The position of object is:
- AAt focus.
- ✓Between focus and centre of curvature.
- CAt pole.
- DBetween pole and focus
Answer: B.
View full solution →Draw a labelled ray diagram to show the formation of image in a convex mirror when the object is at infinity. Mark clearly the pole and focus of the mirror in the diagram.
The image seen in a plane mirror cannot be formed on a screen. What name is given to this type of image?
What sign (+ve or -ve) has been given to the following on the basis of Cartesian Sign Convention?
- Height of a real image.
- Height of a virtual image.
What kind of mirrors are used in big shopping centres to watch the activities of the customers?
State one use of concave mirror based on the formation of image as in case (z) above.
An object $1\ cm$ tall is placed $30\ cm$ in front of a convex mirror of focal length $20\ cm$. Find the size and position of the image formed by the convex mirror.
View full solution →An object is placed just outside the principal focus of concave mirror. Draw a ray diagram to show how the image is formed, and describe its size, position and nature.
Draw a diagram to represent a convex mirror. On this diagram mark principal axis, principal focus F and the centre of curvature C if the focal length of convex mirror is 3cm.
Explain why, a ray of light passing through the centre of curvature of a concave mirror gets reflected back along the same path.
An object is placed at a distance of 6cm from a convex mirror of focal length 12cm. Find the position and nature of the image.
A diverging mirror of radius of curvature 40cm forms an image which is half the height of the object. Find the object and image positions.
The radius of curvature of a convex mirror used as a rear view mirror in a moving car is 2.0m. A truck is coming from behind it at a distance of 3.5m. Calculate (a) position, and (b) size, of the image relative to the size of the truck. What will be the nature of the image?
Which of the following are concave mirrors and which convex mirrors?
Shaving mirrors, Car headlight mirror, Searchlight mirror, Driving mirror, Dentist’s inspection mirror, Torch mirror, Staircase mirror in a double-decker bus, Make-up mirror, Solar furnace mirror, Satellite TV dish, Shop security mirror.
Shaving mirrors, Car headlight mirror, Searchlight mirror, Driving mirror, Dentist’s inspection mirror, Torch mirror, Staircase mirror in a double-decker bus, Make-up mirror, Solar furnace mirror, Satellite TV dish, Shop security mirror.
What is a spherical mirror? Distinguish between a concave mirror and a convex mirror.
A man holds a spherical shaving mirror of radius of curvature 60cm, and focal length 30cm, at a distance of 15cm, from his nose. Find the position of image, and calculate the magnification.
An object is placed 15cm from (a) a converging mirror, and (b) a diverging mirror, of radius of curvature 20cm. Calculate the image position and magnification in each case.
If a concave mirror has a focal length of 10cm, find the two positions where an object can be placed to give, in each case, an image twice the height of the object.
An object is placed (a) 20cm, (b) 4cm, in front of a concave mirror of focal length 12cm. Find the nature and position of the image formed in each case.
At what distance from a concave mirror of focal length 10cm should an object be placed so that:
- Its real image is formed 20cm from the mirror?
- Its virtual image is formed 20cm from the mirror?
The diagram shows a dish antenna which is used to receive television signals from a satellite. The antenna (signal detector) is fixed in front of the curved dish.
- What is the purpose of the dish?
- Should it be concave or convex?
- Where should the antenna be positioned to receive the strongest possible signals?
- Explain what change you would expect in the signals if a larger dish was used.
State whether the following statement is true or false:
A diverging mirror is used as a rear-view mirror.
A diverging mirror is used as a rear-view mirror.
State whether the following statement is true or false:
A student says that we can see an object because light from our eyes is reflected back by the object
A student says that we can see an object because light from our eyes is reflected back by the object
Fill in the following blanks with suitable words:For a convex mirror, parallel rays of light appear to diverge from a point called the ______ .
Fill in the following blank with a suitable word:
A ray of light which is parallel to the principal axis of a convex mirror, appears to be coming from ______ after reflection from the mirror.
A ray of light which is parallel to the principal axis of a convex mirror, appears to be coming from ______ after reflection from the mirror.
Fill in the following blanks with suitable words:The focal length of a concave mirror is the distance from the ______ to the mirror.
Fill in the following blank with a suitable word:
When light is reflected, the angles of incidence and reflection are _____.
When light is reflected, the angles of incidence and reflection are _____.
Fill in the following blanks with suitable words:Parallel rays of light are reflected by a concave mirror to a point called the _____.
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