Questions

MCQ (1 Marks)

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21 questions · timed · auto-graded

MCQ 11 Mark
You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object, you can use either
  • A
    concave mirror or convex mirror
  • concave mirror or convex lens
  • C
    concave mirror or concave lens
  • D
    concave lens or convex lens
Answer
Correct option: B.
concave mirror or convex lens
B
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MCQ 21 Mark
If an object is placed at a distance of 0.5 m in front of a plane mirror, the distance between the object and the image formed by the mirror will be
  • A
    2 m
  • 1 m
  • C
    0.5 m
  • D
    0.25 m
Answer
Correct option: B.
1 m
B
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MCQ 31 Mark
Which of the following can be used to form a real image?
  • Only concave mirror
  • B
    Only plane mirror
  • C
    Only convex mirror
  • D
    Both concave and convex mirrors
Answer
Correct option: A.
Only concave mirror
A
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MCQ 41 Mark
You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from
  • A
    both concave lens and convex lens
  • B
    both concave mirror and convex mirror
  • both concave mirror and convex lens
  • D
    both convex mirror and concave lens
Answer
Correct option: C.
both concave mirror and convex lens
C
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MCQ 51 Mark
Alice looks inside a round steel bowl very closely. She sees her image on the inside of the bowl.
Image

What type of image is formed inside the bowl?
  • A
    Real and small
  • B
    Virtual and small
  • C
    Real and enlarged
  • Virtual and enlarged
Answer
Correct option: D.
Virtual and enlarged
D
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MCQ 71 Mark
A rainbow can be seen in the sky
  • A
    when the sun is in front of you
  • when the sun is behind you
  • C
    when the sun is overhead
  • D
    only at the time of sunrise
Answer
Correct option: B.
when the sun is behind you
B
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MCQ 81 Mark
The colour of light which is deviated the least by prism in the spectrum of white light is
  • A
    violet
  • B
    green
  • C
    yellow
  • red
Answer
Correct option: D.
red
D
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MCQ 91 Mark
An image formed by a lens is erect, such an image could be formed by
  • A
    convex lens provided the image is smaller than object
  • concave lens provided the image is smaller than object
  • C
    concave lens provided the image is larger than object
  • D
    concave lens provided the image is of the same size
Answer
Correct option: B.
concave lens provided the image is smaller than object
B
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MCQ 101 Mark
Which of the following would you prefer to use while reading small letters found in a dictionary?
  • A convex lens
  • B
    A convex mirror
  • C
    A concave lens
  • D
    Either (a) or (b)
Answer
Correct option: A.
A convex lens
A
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MCQ 111 Mark
Which of the following always diverge light rays?
  • A
    Convex mirror and plane mirror
  • Concave lens and convex mirror
  • C
    Concave mirror and convex lens
  • D
    Concave lens and convex mirror
Answer
Correct option: B.
Concave lens and convex mirror
B
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MCQ 121 Mark
Boojho and Paheli were given one mirror each by their teacher. Boojho found his image to be erect and of the same size, whereas Paheli found her image erect and smaller in size. This means that the mirrors of Boojho and Paheli respectively are
  • A
    plane mirror and concave mirror
  • B
    concave mirror and convex mirror
  • plane mirror and convex mirror
  • D
    convex mirror and plane mirror
Answer
Correct option: C.
plane mirror and convex mirror
C
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MCQ 131 Mark
An erect and enlarged image can be formed by
  • A
    only a convex mirror
  • only a concave mirror
  • C
    only a plane mirror
  • D
    Both convex and concave mirrors
Answer
Correct option: B.
only a concave mirror
B
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MCQ 141 Mark
A virtual image
  • A
    can be formed on the screen
  • cannot be formed on the screen
  • C
    is formed only by a plane mirror
  • D
    is formed only by the convex mirror
Answer
Correct option: B.
cannot be formed on the screen
B
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MCQ 151 Mark
The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of $2 m / s$. The driver sees in his rear view mirror, the image of a truck parked behind his car. The speed at which the image of the truck appears to approach the driver will be
  • A
    $1 m / s$
  • B
    $2 m / s$
  • C
    $4 m / s$
  • D
    $8 m / s$
Answer

(B) $2 m / s$
Explanation: The speed at which the image of the truck appears to approach the driver will be same as that the reverse speed of the car, i.e. $2 m / s$.

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MCQ 161 Mark
David is observing his image in a plane mirror. The distance between the mirror and his image is 4 m. If he moves 1m towards the mirror, then the distance between David and his image will be
  • A
    3 m
  • B
    5 m
  • 6 m
  • D
    8 m
Answer
Correct option: C.
6 m
(C) 6m.
Explanation: As we know that in case of plane mirror, an image distance is equal to the object distance from the mirror. So, his image will be at 4-1=3m from mirror and distance between David and his image is 6m.
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MCQ 171 Mark
A virtual image larger than the object can be produced by a
  • A
    concave lens
  • concave mirror
  • C
    convex mirror
  • D
    plane mirror
Answer
Correct option: B.
concave mirror
(B) Concave mirror
Explanation: Concave mirror can form real image and virtual image of larger size than the object.
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MCQ 181 Mark
When a white light passes through a prism, it splits into
  • A
    eight colours
  • seven colours
  • C
    five colours
  • D
    No colour
Answer
Correct option: B.
seven colours
B
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MCQ 191 Mark
Which of the following lens is used in microscopes?
  • Convex lens
  • B
    Concave lens
  • C
    Both (a) and (b)
  • D
    None of these
Answer
Correct option: A.
Convex lens
A
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MCQ 201 Mark
An erect and enlarged image can be obtained from
  • A
    convex mirror
  • concave mirror
  • C
    plane mirror
  • D
    None of these
Answer
Correct option: B.
concave mirror
B
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MCQ 211 Mark
Image formed by a plane mirror is
  • A
    real and enlarged
  • virtual and same size
  • C
    real and erect
  • D
    virtual and diminished
Answer
Correct option: B.
virtual and same size
B
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MCQ (1 Marks) - Science STD 7 Questions - Vidyadip