Assertion (A) : For a ray of light incident at an angle of incidence i = 0°, angle of reflection is r = 0°.

Reason (R) : The angle of incidence i is equal to angle of reflection r.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false

Assertion (A) : The image of an object placed close to a concave mirror is a real image.

Reason (R) : A real image is formed due to the actual intersection of the reflected rays.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false

Assertion (A) : For an object placed symmetrically when the angle θ between the mirrors is 72°, the number of images formed is 4.

Reason (R) : If n = 360°/θ is odd, the number of images for an object placed symmetrically is equal to n.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false

Assertion (A) : Concave mirror is used as doctor's head mirror.

Reason (R) : If a parallel beam of light is incident on a concave mirror, the mirror focuses the beam to a point.

1. both A and R are true and R is the correct explanation of A
2. both A and R are true and R is not the correct explanation of A
3. assertion is false but reason is true
4. assertion is true but reason is false