MCQ
Assertion: The mirrors used in torch lights are parabolic not concave.
Reason: The image formed by concave mirror is always virtual.
  • A
    If both assertion & reason are true and the reason is the correct explanation of the assertion.
  • B
    If both assertion & reason are true but the reason is not correct explanation of the assertion.
  • If assertion is true but reason is false.
  • D
    If assertion is false but reason is true.

Answer

Correct option: C.
If assertion is true but reason is false.
(c) Assertion is true but reason is false

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Assertion : A real image cannot be produced by plane or convex mirror.
Reason : The focal length of a convex mirror is always taken as possitive.
Assertion (A): A current-carrying conductor experiences a force in a magnetic field.
Reason (R): The net charge on a current-carrying conductor is zero.
Assertion (A) : It is possible to detect alcohol drunken drivers.
Detection is done through the electrochemical redox reaction of alcohol.
Assertion (A) : If the plant part moves in the direction of gravity, it is called positive geotropism. Reason (R) : Stem shows positive geotropism.
Assertion (A) : Plants and animals can utilize atmospheric nitrogen.
Reason (R) : Atmosphere is a rich source of nitrogen.
Assertion: Dengue can be treated by intake of antibiotics.
Reason: Antibiotics blocks the multiplication of viruses.
Assertion: An object can have constant speed but the variable velocity
Reason: Speed is a scalar but velocity is a vector.
(a) If both assertion & reason are true and the reason is the correct explanation of the assertion.
(b) If both assertion & reason are true but the reason is not correct explanation of the assertion.
(c) If the assertion is true but the reason is false.
(d) If assertion & reason both are false.
(e) If assertion is false but reason is true.
Assertion (A): Non-metals are electronegative. Reason (R) : Non-metal losë electrons to form cation.
Assertion (A) : Our retinal print can be forged.
Reason (R) : Our retinal print is unique.
Assertion (A) : The loss of excess water from the aerial parts of the plant in the form of water vapour is known as transpiration. Reason (R) : Stomata of the leaf perform transpiration.