Raj is standing in front of a plane mirror. The distance between Raj and his image is 100cm. If the distance between the mirror and image is x. What could be the possible value of x?
  • x = 50 cm
  • x = 100 cm
  • x = 200 cm
  • x = 25 cm
Virtual image forms
  • When rays of light converge.
  • When rays of light do not actually meet, but appear to meet when produced backwards.
  • When rays of light actually meet.
  • When rays of light meet on the back side of mirror.
The image formed by plane mirror is
  • Real and inverted
  • Real and erect
  • Virtual and erect
  • Virtual and inverted
An observer moves towards a stationary plane mirror at a speed of 4m/s. The speed of image with respect to mirror is __________.
  • 4m/s towards the mirror
  • 4 m/s away from the mirror
  • 8 m/s away from the mirror
  • 8 m/s towards the mirror
is the lateral inversion of
1605_image015.jpg
  • REFLECTION
  • NOITCELFER
  • NIOTECLEFER
  • RFLECTION
A medium through which light propagates easily is a
  • Opaque medium
  • Partially translucent medium
  • Transparent medium
  • Translucent medium
Virtual image
  • may or may not be projected on the screen.
  • can be projected on the screen.
  • cannot be projected on the screen.
  • projected on the eyes only
Real image
  • May or may not be projected on the screen
  • can be projected on the screen
  • Projected on the eyes only
  • Cannot be projected on the screen
What will be the angle of reflection if light falls normally on the reflecting surface?
  • 90°
  • 0°
  • - 180°
  • 180°
Angle of incidence is
  • the angle between the reflected ray and the mirror surface.
  • the angle between the reflected ray and the incident ray.
  • the angle between the reflected ray and the normal.
  • the angle between the incident ray and the normal.
Which of the following letter shows lateral inversion?
  • I
  • L
  • H
  • O
Rahul is standing in front of a plane mirror. The distance between Rahul and his image is 150cm. If Rahul's distance from the mirror is x. What could be the possible value of x?
  • x = 50 cm
  • x = 100cm
  • x = 25cm
  • x = 75m
Light always travels along a
  • Zigzag path
  • Straight line path
  • Curved path
  • Circular path
Harry is standing in front of a plane mirror at a distance of 6 m. His image on the other side will form at a distance of
  • 12
  • 9 m
  • 3 m
  • 6 m
In a lateral inversion
  • The left side of the object becomes the right side of the image and vice-versa.
  • The right side of the object remains the right side of the image.
  • The left side of the object remains the left side of the image.
  • None of the above
Which among the following is true for a plane mirror?
  • Angle of incidence is the angle between incident ray and the mirror surface.
  • Angle of incidence is the angle between the reflected ray and the incident ray.
  • Angle of incidence is not always equal to angle of reflection.
  • Angle of incidence is always equal to angle of reflection.
A student obtained a sharp image of the grills of a window on a screen using a concave mirror. His teacher remarked that for getting better results a well lit distance object (preferably the sun) should be focussed on the screen. What should be done for this purpose?
  • Move the screen and the mirror away form the object
  • Move the screen slightly away from the mirror
  • Move the mirror slightly towards the screen
  • Move the screen and the mirror towards the object
Power of a lens is
  • 1/R
  • 1/f
  • 1/u
  • 1/v
After tracing the path of rays of light through a glass slab for three different angles of incidence, a student measured the corresponding values angle of refraction r and angle of emergence e and recorded them in the table given below: The correct observations are:
The-Story-of-Village-Palampur-Multiple-Choice-Questions-for-CBSE-Class-9-Economics-Topperlearning.png
  • I, II and III correct
  • II and III
  • I and II
  • I and III
The refractive index is
161.png
  • A
  • B
  • C
  • D
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