Question

1. Assertion and Reasoning:

Directions:

In the following questions, the Assertion) and Reason(s) (R) have been put forward. Read both the statements carefully and choose the correct alternative from the following:

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

(B) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion

(C) Assertion is true but the Reason is false.

(D) Assertion is false but the Reason is true.

(E) Both the statements are false.

Assertion: Magnification of spherical lens has no unit

Reason Magnification is the ratio of two simile quantities

Q2. Assertion: The angle of incidence for a ray of light having zero angle of reflection is 2 To Reason Reflecting surface follows Snell's law

Q3. Assertion:

A concave mirror of radius R is placed in water. is focal length in air and water differ.

Reason equal to R/2.

The focal length of the concave mirror of radius R is

04. Assertion: Power of concave lens is negative and that of convex lens is positive

Reason : For diverging lens focal length is taken as negative and for converging lens focal length is taken as positive.

Q5. Assertion : Lateral displacement is the perpendicular distance between incident ray and the emergent ray.

Reason :The wider the glass slab, the larger the lateral displacement
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Answer 1

Answer: (1) both the Assertion and the reason are the correct explanation of the assertion

(2) assertion is false but the reason is true

(3) the assertion and the reason are correct but the reason is not the correct explanation of the assertion

(4) assertion is true but the reason is false

(5) assertion is false but the reason is true

Answer 2

Answer:

Heyy there! Here is your answer

Explanation:

SOLUTION 1)

Option(a) Both assertion and reasoning are true, correct explanation.

SOLUTION 2)

Option (e) Both (A) and (R) are false

Explanation:

Assertion is is because  if angle of incidence is zero , angle of refraction also has to be zero, not 2.

 Reason is false as snell's law is used for refraction of light, not          reflection .

SOLUTION 3)

(c) Assertion is false, reason is true

Explanation :  focal length of a lens can change, not a mirrors

SOLUTION 4)

(a) Bot A and R are true, correct explanation.

SOLUTION 5)

(c)  Assertion is true, reason is false

Explanation: lateral displacement does not depend on the width  of the glass slab.