Assertion: The focal length of a convex mirror is always takes as positive.

Reason: A real image of a real object cannot be obtained with a convex mirror.

(1) Both Assertion and Reason are true and the reason is the correct explanation of the assertion.

(2) Both Assertion and Reason are true but the reason is not the correct explanation of the assertion.

(3) Assertion is a true statement but Reason is false.

(4) Both Assertion and Reason are false statements.

A white beam of light can deviate without dispersion by

1.  using two suitable glass prisms placed in the same sense

2.  using two suitable glass prisms placed in the opposite sense 

3.  Using a suitable glass prism

4.  None of these

If total deviation produced by two plane mirrors is $300°$ then number of images formed of an object placed symmetrically is

1.  5

2.  11

3.  2

4.  7

Assertion: A convex lens may be diverging.

Reason: The nature of a lens depends upon the refractive index of the lens and that of the surrounding medium.

(1) Both Assertion and Reason are true and the reason is the correct explanation of the assertion.

(2) Both Assertion and Reason are true but the reason is not the correct explanation of the assertion.

(3) Assertion is a true statement but Reason is false.

(4) Both Assertion and Reason are false statements.

A man runs towards a stationary plane mirror with a velocity 15 m/s. The magnitude of the velocity of the man relative to his image is

1.  15 m/s

2.  30 m/s

3.  45 m/s

4.  Zero

Assertion: The air bubble shines in water.

Reason: Air bubble in water shines due to the refraction of light.

(1) Both Assertion and Reason are true and the reason is the correct explanation of the assertion.

(2) Both Assertion and Reason are true but the reason is not the correct explanation of the assertion.

(3) Assertion is a true statement but Reason is false.

(4) Both Assertion and Reason are false statements.

Assertion: A convex mirror is used as a rearview mirror.

Reason: Convex mirror always forms a virtual, erect, and diminished image for real objects.

(1) Both Assertion and Reason are true and the reason is the correct explanation of the assertion.

(2) Both Assertion and Reason are true but the reason is not the correct explanation of the assertion.

(3) Assertion is a true statement but Reason is false.

(4) Both Assertion and Reason are false statements.

Minimum angular magnification produced by an astronomical telescope having a focal length of field lens and ocular 200 cm and 5 cm respectively is 

1.  10

2.  20

3.  30

4.  40

Assertion: When a convex glass lens is dipped in water, its focal length increases.

Reason: When the lens is dipped in water, its light-bending capacity increases.

(1) Both Assertion and Reason are true and the reason is the correct explanation of the assertion.

(2) Both Assertion and Reason are true but the reason is not the correct explanation of the assertion.

(3) Assertion is a true statement but Reason is false.

(4) Both Assertion and Reason are false statements.