Ray Optics-IV Physics Test Series NEET 2020

Test Preparation on Ray Optics-IV-Physics Test Series For NEET 2020

1.

A beam of light consisting of red, green and blue colours is incident on a right angled prism. The refractive index of the material of the prism for the above red, green and blue wavelengths are 1.39, 1.44 and 1.47, respectively The prism will

1Separate all the three colours from one another
2Not separate the three colours at all
3Separate the red colour part from the green and blue colours
4Separate the blue colours part from the red and green colours

2.

For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must be made of a material whose refractive index

1Lies between 2 and 1
2Lies between 2 and 2
3Is less than 1
4Is greater than 2

3.

Frequencies of light incident on a system of scattering particles are in the ratio of 1 : 2. Then, the intensity of scattered light in a particular direction is

11 : 4
21 : 2
31 : 8
41 : 16

4.

White light is incident on face AB of a glass prism. The path of the green component is shown in the figure. If the green light is just totally internally reflected at face AC as shown, the light emerging from face AC will contain

1Yellow, orange and red colours
2Violet, indigo and blue colours
3All colours
4All colours except green

5.

The refracting angle of a prism 'A', and refractive index of the material of the prism is cot(A/2). The angle of minimum deviation is

1180- 2A
290- A
3180+2A
4180-3A

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