Wave Optics (KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics): Questions 1 - 3 of 6

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 250 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 200.00 or

Question number: 1

» Wave Optics » Malus' Law and Its Application

Appeared in Year: 2011

MCQ▾

Question

A plane polarized light passed through successive polarizers which are rotated by 300 with respect to each other in the clockwise direction. Neglecting absorption by the polarizers and given that the first polarizer’s axis is parallel to the plane of polarization of the incident light, the intensity of light at the exit of the fifth polarizer is closest to –

Choices

Choice (4) Response

a.

17.5 % of the incident light

b.

30 % of the incident light

c.

Zero

d.

Same as that of the incident light

Question number: 2

» Wave Optics » Young's Double Slit Experiment

Appeared in Year: 2010

MCQ▾

Question

In Young’s double slit experiment, the distance between the two slits is 0.1 mm, the distance between the slits and the screen is 1 m and the wavelength of the light used is 600 nm. The intensity at a point on the screen is 75 % of the maximum intensity. What is the smallest distance of this point from the central fringe?

Choices

Choice (4) Response

a.

0.5 mm

b.

1.5 mm

c.

1.0 mm

d.

2.0 mm

Question number: 3

» Wave Optics » Young's Double Slit Experiment

Appeared in Year: 2011

MCQ▾

Question

In a Young’s double slit set-up, light from a laser source falls on a pair of very narrow slits separated by 1.0 micrometer and bright fringes separated by 1.0 millimeter are observed on a distant screen. If the frequency of the laser light is doubled, what will be the separation of the bright fringes?

Choices

Choice (4) Response

a.

2.0 mm

b.

0.25 mm

c.

1.0 mm

d.

0.5 mm

Sign In