Optics Quiz 1

Question 1

Time taken by light to cross a glass slab of thickness 4 mm and refractive index 3 is

Accepted Answer

$4 \times 10^{-11} s$

Answer

$2 \times 10^{-11} s$

Answer

$16 \times 10^{-11} s$

Answer

$8 \times 10^{-10} s$

Question 2

If mirrors are inclined to each other at an angle of 90&deg;, the total number of images seen for a symmetric position of an object will be

Accepted Answer

3

Answer

4

Answer

5

Answer

3 or 4

Question 3

In case of a convex mirror, the image formed is

Accepted Answer

always on opposite side, virtual, erect.

Answer

always on the same side, virtual, erect.

Answer

always on opposite side, real, inverted.

Answer

dependent on object distance.

Question 4

A glass slab is placed in the path of a beam of convergent light. The point of convergence of light

Accepted Answer

moves towards the glass slab.

Answer

moves away from the glass slab.

Answer

remains at the same point

Answer

undergoes a lateral shift

Question 5

For a person seeing an object placed in optically rarer medium,

Accepted Answer

apparent depth of the object is more than real depth

Answer

apparent depth is smaller than the real depth.

Answer

apparent depthe might be smaller or greater depending on the position of the person

Answer

nothing can be concluded about the depth of object from given data

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