9. Light - Reflection & Refraction

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Assertion & Reason Quiz

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1. Assertion (A): A ray incident along normal to the mirror retraces its path. Reason (R): In reflection, angle of incidence is always equal to angle of reﬂection. *

1 point

Assertion (A) is true but Reason (R) is false.

Both Assertion (A) and Reason (R) are true but Reason (R) Is not the correct explanation of Assertion (A).

Assertion (A) Is false but Reason (R) is true.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

2. Assertion (A): Large concave mirrors are used to concentrate sunlight to produce heat in solar cookers. Reason (R): Concave mirror converges the light rays falling on it to a point. *

1 point

Assertion (A) is true but Reason (R) is false.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Assertion (A) Is false but Reason (R) is true.

Both Assertion (A) and Reason (R) are true but Reason (R) Is not the correct explanation of Assertion (A).

3. Assertion (A): A pencil partly immersed in water appears to be bent at the-water surface. Reason (R): Light from different points on the pencil immersed in water refracts and appears to come from a point above the original position. *

1 point

Assertion (A) Is false but Reason (R) is true.

Both Assertion (A) and Reason (R) are true but Reason (R) Is not the correct explanation of Assertion (A).

Assertion (A) is true but Reason (R) is false.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

4. Assertion (A): Higher is the refractive index of a medium or denser the medium, lesser is the velocity of Light in that medium Reason (R): Refractive index is inversely proportional to velocity. *

1 point

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Assertion (A) is true but Reason (R) is false.

Assertion (A) Is false but Reason (R) is true.

Both Assertion (A) and Reason (R) are true but Reason (R) Is not the correct explanation of Assertion (A).

5. Assertion (A): A convex lens can form a magniﬁed erect as well as magniﬁed inverted image of an object placed in front of it. Reason (R): A magnified and inverted image can be obtained by a convert lens when an object is kept between F and C. *

1 point

Assertion (A) is true but Reason (R) is false.

Assertion (A) Is false but Reason (R) is true.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).

Both Assertion (A) and Reason (R) are true but Reason (R) Is not the correct explanation of Assertion (A).

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