Free Printable Test 1

1.

In graded index fiber total reflected light takes a-------

a)

Straight path

b)

Parabolic path

c)

Elliptical path

d)

Circular path

2.

Optic fiber works on the phenomenon of

a)

total internal reflection

b)

polarization

c)

diffraction

d)

refraction

3.

Optic fibers are used in .........

a)

CAT scans

b)

X ray photos

c)

Ultrasound scan

d)

Endoscopy

4.

Which of the following is not the property of LASER light?

a)

Coherence

b)

Chromaticity

c)

High intensity

d)

Directionality

5.

What is the region enclosed by the optical cavity called?

a)

Optical region

b)

Optical system

c)

Optical box

d)

Optical resonator

6.

Life time of metastable state in a Ruby laser is......

a)

$10^{-8}$ s

b)

$10^{-6}$ s

c)

$10^{-3}$ s

d)

$10^{-2}$ s

7.

Pumping mechanism used in Ruby laser is.........

a)

optical pumping

b)

Electrical pumping

c)

Chemical pumping

d)

Thermal pumping

8.

Which of the following phenomenon can only be seen in transverse waves ?

a)

Diffraction

b)

Dispersion

c)

Interference

d)

Polarization

9.

Light is polarized to the maximum when it is incident on a glass surface at an angle of incidence

a)

$\tan^{-1}\ \left(\frac{3}{2}\right)$

b)

$\tan^{-1}\left(\frac{2}{3}\right)$

c)

$\tan^{-1}\left(\frac{1}{2}\right)$

d)

$\tan^{-1}\left(\frac{1}{3}\right)$

10.

Brewster's law is ......

a)

$i_p=90^0$

b)

$\mu=\tan i_p$

c)

$i_p\ -r\ =\ \tan\mu$

d)

$i_p=\ \tan\mu$

Test 1

Total questions: 10

Worksheet time: 5mins

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