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Byju's Answer
Standard XII
Physics
Image of Point Object in Plane Mirror
Assertion: Th...
Question

Assertion: The image of a virtual object due to a plane mirror is real.
Reason :.If the rays seem to be converging at a point behind a plane mirror, they are reflected and they actually meet in front of the mirror.

A
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
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B
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
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C
Assertion is true statement but Reason is false
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D
Both Assertion and Reason are false statements
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Solution

The correct option is A Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion
The image of a real object is virtual while that of a virtual object (as shown) is real.
852735_430858_ans_d4da221218094e378df655385188a551.png

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Q. Assertion: Focal length of a convex mirror is 20 cm. If a real object is placed at a distance of 20 cm from the mirror, its virtual, erect and diminished image will be formed.
Reason: If a virtual object is placed at 20 cm distance behind the convex mirror, its image is formed at infinity.
Choose the correct option based on it.
Q. (i)
Assertion: A circle is not a rectilinear figure.
Reason: A figure formed by straight lines only is called a rectilinear figure.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.
(ii)
Assertion: All right angles are equal to one another.
Reason: A unique line passes through a single point.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) Assertion is true and Reason is false.
(d) Assertion is false and Reason is true.
Q. Read the assertion and reason carefully to mark the correct option out of the options given below:
Assertion: Short wave bands are used for transmission of radio waves to a large distance.
Reason : Short waves are reflected by ionosphere
(a)If both assertion and reason are true and the reason is the correct explanation of the assertion.
(b)If both assertion and reason are true but reason is not the correct explanation of the assertion.
(c)If assertion is true but reason is false.
(d)If the assertion and reason both are false.
(e)If assertion is false but reason is true.
Q. Assertion: 3 + 7 = 9 is a statement.
Reason: A sentence that can be judged to be true or false, but not both, is called a statement.
(a) Both Assertion and Reason are true and Reason is a correct explanation of Assertion.
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Q.

Assertion: In rolling a dice, event A = {1, 3, 5} and event B = {2, 4} are mutually exclusive events.
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