EASY
Earn 100

Draw the ray diagram necessary for a concave mirror to represent the image formed by the mirror of an object placed between the pole and the focus.

Important Questions on Light – Reflection and Refraction

EASY
A ray of light makes an angle of 50° with the surface S1 of the glass slab. Its angle of incidence will be 
MEDIUM

The radius of curvature of a converging mirror is 30 cm. At what distance from the mirror should an object be placed so as to obtain a virtual image?

MEDIUM

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Which of the following statements is not true in reference to the diagram shown above?

EASY
The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object?
EASY

A student holding a mirror in his hand, directed the reflecting surface of the mirror towards the Sun. He then directed the reflected light on to a sheet of paper held close to the mirror.

Which type of mirror does he have?

EASY
At focus F and between F and 2F, a concave mirror always forms a
HARD

An object of height 4 cm is kept at a distance of 30 cm from the pole of a diverging mirror. If the focal length of the mirror is 10 cm, the height of the image formed is ____.

EASY
Define the focal length of a spherical mirror.
EASY
If the image formed by a spherical mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it ? Draw a labelled ray diagram to support your answer. 
MEDIUM

In which of the following is a concave mirror is used?

HARD

A concave mirror of focal length 15cm forms an image. The position of the object when the image is virtual and linear magnification is 2 is.

EASY
A student holding a mirror in his hand, directed the reflecting surface of the mirror towards the Sun. He then directed the reflected light on to a sheet of paper held close to the mirror.

What should he do to burn the paper?

EASY
Does focal length of a spherical mirror changes when it is completely immersed in water? Predict and write the reason.
MEDIUM

Observe the following diagram and answer the question given below

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Explain why a ray of light passing through the centre of curvature of a concave mirror gets reflected back along the same path.

EASY
Define the principal focus of a concave mirror.
EASY
An object is placed 5 cm in front of convex mirror whose radius of curvature is 3 cm. Find the position and nature of image.
EASY
The distance between pole and principal focus of a spherical mirror is called
MEDIUM

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For the diagram shown, according to the new Cartesian sign convention the magnification of the image formed will have the following specifications.

MEDIUM

A student holding a mirror in his hand, directed the reflecting surface of the mirror towards the Sun. He then directed the reflected light on to a sheet of paper held close to the mirror.

Will he be able to determine the approximate value of focal length of this mirror from this activity ? Give reason and draw ray diagram to justify your answer in this case.

EASY
When an object is kept within the focus of a concave mirror, an enlarged image is formed behind the mirror. This image is: