AIIMS 2018 | Wave Optics Question 5 | Physics

An unpolarised beam of intensity $$2 a^2$$ passes through a thin polaroid. Assuming zero absorption in the polaroid, the intensity of emergent plane polarised light is

$$2 a^2$$

$$a^2$$

$$\sqrt{2} a^2$$

$$\frac{a^2}{2}$$

AIIMS 2018

MCQ (Single Correct Answer)

-0.33

Red light of wavelength 5400 $$\mathop A\limits^o $$ from a distant source falls on a slit 0.80 mm wide. Calculate the distance between first two dark bands on each side of central bright band in the diffraction pattern observed on a screen place 1.4 m from the slit.

1.89 mm

4 mm

1 mm

3 mm

AIIMS 2018

MCQ (Single Correct Answer)

-0.33

Assertion If a glass slab is placed in front of one of the slits, then fringe with will decrease.

Reason Glass slab will produce an additional path difference.

Both Assertion and Reason are correct, Reason is the correct explanation of Assertion

Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion

Assertion is correct and Reason is incorrect

Assertion is incorrect and Reason is correct

AIIMS Subjects

Biology

Botany

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Evolution