Tracing paper is
  • Transparent
  • Opaque
  • Translucent
Can we see Shadows on Transparent objects
  • Yes
  • No
The principle behind the pin hole camera is
  • Curvilinear propagation of light
  • Rectilinear propagation of light
  • Image
  • shadow
The dark patches are formed behind the objects are called
  • Clear images
  • Dark images
  • Dim images
  • Shadow
Fire fly is a
  • Non-living luminous body
  • Plant body
  • Living luminous body
  • Heavenly body
Objects which allow light to pass through them are called
  • Opaque objects
  • Transparent objects
  • Translucent objects
  • Image
Which of the following is an example of a translucent object?
  • A thin sheet of paper
  • A thin glass slab
  • A thin iron sheet
  • All of these
When an opaque objects comes in the path of light it forms
  • An image with colors
  • Shadow
  • Black and white image
  • Depends on the color of light
Which letters of English alphabet will not show lateral inversion?
  • I,O,U
  • N,Z,X
  • I,X,E
  • A,E,I
Bouncing back of light from shining surfaces is called
  • Dispersion
  • Refraction
  • Reflection
  • Total internal reflection
Assertion(A): Moon is non - luminous object. Reason(R): Moon does not emit light on their own.
  • A and R are true. R is not the correct explanation of A
  • A is true and R is false
  • A is false and R is true
  • A and R is true and R is the correct explanation of A
Assertion(A): The image formed in pinhole camera is laterally inverted.Reason(R) : Image gives the shape, size and color of the object.
  • A and R are true and R is not the correct explanation of A
  • A and R are false
  • A is true and R is false
  • A and R are true and R is the correct explanation of A.
When an opaque object comes in the path of light it forms
  • an image with colours
  • black and white image
  • Shapes depending on the colour of the object
  • shadow
In a mirror, if A is able to see B, B also can see A. True/False
  • True
  • False
  • Both
  • None of these
All the shining bodies in sky have their own?
  • Absolutely yes
  • False
  • Not sure
  • Firefly
Opaque objects cast …………………. shadows in morning and ………………… shadows at noon.
  • big, small
  • small, big
  • Both
  • None
Images formed by a pinhole camera is ……………….. whereas images formed by a plane mirror is …………….. .
  • erect & upside down
  • Not upside down & bent
  • upside down and erect
  • None
A student is making a model of a garden. He wants to cover the model with a sheet that allows everyone to see through it. Which sheet should the student use?
  • paper
  • aluminium foil
  • plastic wrap
  • None
A student stands in front of a lamp to produce the shadow of his body. The shadow of the boy is formed on the screen as shown.What can be concluded from the observation regarding formation of the shadows?
  • the screen must be placed in front of the opaque object
  • the opaque object must be placed behind the source of light
  • the opaque object must be placed between source of light and the screen
  • the source of light must be placed between the opaque object and the screen
A student has the given objects for an experiment:-A candle A white cardboardA ballA mirrorThere are three positions (X, Y, and Z) marked on the table.What should be placed at these positions to form an image on the white cardboard?
  • X: candle, Y: ball, Z: mirror
  • X: mirror, Y: ball, Z: cardboard
  • X: candle, Y: ball, Z: cardboard
  • X: ball, Y: candle, Z: cardboard
The image shows a hot air balloon flying at higher altitude.What should be the position of the Sun to get the shadow of the hot air balloon at O?
  • at S
  • at Q
  • at R
  • at P
The image shows the bird flying under the sun and four different position.At which position the shadow of the bird will be larger?
  • at W
  • at X
  • at Y
  • at Z
The image shows a pinhole camera.Where does the image of the object in the pinhole camera form?
  • at the pinhole
  • at the translucent sheet
  • on the inner surface of the inner box
  • on the upper surface of the outer box
A student develops a model of a pinhole camera using two boxes as shown.The student put the small box in the big box. He starts observing the object through the pinhole camera but does not get the clear image. What should the student do to get a clear image?
  • qturn the sides of the inner box
  • make a pinhole in the inner box
  • paste a tracing paper on the outer box and the inner box both.
  • None of the above
A student observes the lighted bulb through the pinhole camera as shown.Which option shows the image formation of the bulb in the camera?
  • erect image at pinhole
  • upside down image at pinhole
  • erect image at translucent screen
  • upside down image at translucent screen
A student observes a tree using a pinhole camera. She decreases the distance between the tree and the camera and looks at the tree through the camera again. The image formed is as shown.What can be concluded from the image?
  • farther the object, larger the erect image
  • farther the object, smaller the erect image
  • closer the object, larger the inverted image
  • closer the object, smaller the inverted image
The image shows the reflection of a candle.Which statement is correct based on the observation
  • plane mirror produces an upright image of the same size
  • plane mirror produces an upright image of a smaller size
  • plane mirror produces an upside-down image of the same size
  • plane mirror produces an upside-down image of a smaller size
A student flashed a light from source on a mirror, as shownIn which direction is the light likely to be reflected from the mirror?
  • towards P
  • towards Q
  • towards R
  • towards S
A student makes two setups using a torch and a ball to study (i) formation of shadows and (ii) Reflection of light. some material that was used in creating two setups.A mirrorA glass sheetA cardboard sheetA tracing paperWhich pair of the given material could be used in addition to the torch and the ball to demonstrate formation of shadow and reflection of light?
  • Shadow: cardboard sheet, Reflection: mirror
  • Shadow: tracing paper, Reflection: glass sheet
  • Shadow: cardboard sheet, Reflection: tracing paper
  • Shadow: glass sheet, Reflection: mirror
The image shows the setup of the reflection and shadow formation.What can be concluded by the observation?
  • shadow forms when light is blocked by an object, whereas reflection is bouncing of light
  • shadow forms when light passes through an object, whereas reflection is absorption of light
  • a shadow forms when the light is blocked by an object, whereas reflection is absorption of light
  • a shadow forms when the light passes through an object, whereas reflection is bouncing of light
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