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Science Assertion (A) & Reason (B) MCQ

Light: Shadows and Reflections · Gujarat Board (GSEB) STD 7 (GSEB - English Medium). 10 questions.

Questions

Assertion (A) & Reason (B) MCQ

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10 questions · auto-graded multiple-choice test.

MCQ 11 Mark
Assertion (A): The image formed by a plane mirror is laterally inverted.
Reason (R): A plane mirror reverses the left and right sides of the object.
  • ✓
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: A.
Both A and R are true and R is the correct explanation of A.
A
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MCQ 21 Mark
Statement A: Image formed by a plane mirror is laterally inverted.
Statement B: Images of alphabets T and O appear identical to themselves in a plane mirror.
  • ✓
    Both statements are true
  • B
    Both statements are false
  • C
    Statement A is true, but statement B is false
  • D
    Statement A is false, but statement B is true
Answer
Correct option: A.
Both statements are true
(A) Both statements are true.
Plane mirrors create a laterally inverted image (left to right is reversed), and some alphabets like T and O appear the same in a plane mirror.
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MCQ 31 Mark
Assertion (A): In mirror image, the left side of the object is seen as the right side in the image.
Reason (R): The capital English letter ‘H’ does not show a lateral inversion.
  • A
    Both A and R are true and R is the correct explanation of A.
  • ✓
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A.
B
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MCQ 41 Mark
Assertion (A): Never look directly at the sun it may be extremely harmful for our eyes.
Reason (R): Pin hole camera can be used for brightly little objects.
  • A
    Both A and R are true and R is the correct explanation of A.
  • ✓
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
Answer
Correct option: B.
Both A and R are true but R is not the correct explanation of A.
B
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MCQ 51 Mark
Assertion (A): The objects which allow the light to pass through them are called translucent objects.
Reason (R): Glass sheets, water, and air are examples of transparent objects.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • ✓
    A is false but R is true.
Answer
Correct option: D.
A is false but R is true.
D
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MCQ 61 Mark
Assertion (A): Transparent objects do not form faint shadows always.
Reason (R): They allow most light to pass.
  • ✓
    Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).
  • B
    Both Assertion (A) and Reason (R) are true, but (R) is not the correct explanation of (A).
  • C
    (A) is true, but (R) is false.
  • D
    (A) is false, but (R) is true.
Answer
Correct option: A.
Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).
A
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MCQ 71 Mark
Assertion (A): Shadows are shorter at noon.
Reason (R): Sun is overhead at noon.
  • ✓
    Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).
  • B
    Both Assertion (A) and Reason (R) are true, but (R) is not the correct explanation of (A).
  • C
    (A) is true, but (R) is false.
  • D
    (A) is false, but (R) is true.
Answer
Correct option: A.
Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).
A
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MCQ 81 Mark
Assertion (A): A pinhole camera gives an erect image.
Reason (R): The hole allows light in a straight path.
  • A
    Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).
  • B
    Both Assertion (A) and Reason (R) are true, but (R) is not the correct explanation of (A).
  • C
    (A) is true, but (R) is false.
  • ✓
    (A) is false, but (R) is true.
Answer
Correct option: D.
(A) is false, but (R) is true.
D
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MCQ 91 Mark
Assertion (A): Shadows are always black or faint.
Reason (R): Colour of an object does not affect shadow.
  • A
    Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).
  • ✓
    Both Assertion (A) and Reason (R) are true, but (R) is not the correct explanation of (A).
  • C
    (A) is true, but (R) is false.
  • D
    (A) is false, but (R) is true.
Answer
Correct option: B.
Both Assertion (A) and Reason (R) are true, but (R) is not the correct explanation of (A).
B
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MCQ 101 Mark
Assertion (A): The image in a plane mirror is real.
Reason (R): A real image can be captured on a screen.
  • A
    Both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A).
  • B
    Both Assertion (A) and Reason (R) are true, but (R) is not the correct explanation of (A).
  • C
    (A) is true, but (R) is false.
  • ✓
    (A) is false, but (R) is true.
Answer
Correct option: D.
(A) is false, but (R) is true.
D
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