Ray and Wave Optics Test Online MCQs

1. Light of wavelength 589.3 nm is incident normally on a slit of width 0.01 m. The angular width of the central diffraction maximum at a distance of 1 m from the slit, is:

2. Light of wavelength 6000 Å id reflected at nearly normal incidence from a soap films of refractive index 1.4. the least thickness of the film that will appear black is:

3. Interference occurs in which of the following waves?

4. In an astronomical microscope, the focal length of the objective is made:

5. How does the red shift confirm that the universe is expanding?

6. Four lenses having the focal length of + 15 cm, 20 cm, +150 cm, and +250 cm respectively are provided to make an astronomical telescope. The image is virtual, then the position of the object will be:

7. Match the items in list-I with times in list-II and collect the correct answers from the codes given below the lists.

List-I

I. Myopia

II. Hyper-metropia

III. Presbyopia

IV. Astigmation

List-II

1. Bifocal lens

2. Cylindrical lens

3. Concave lens

4. Convex lens

8. The ratio of intensities of two waves is 9 : 1. If they superimpose, the ratio of maximum to minimum intensity will be:

9. A concave mirror having the focal length 15cm, forms an image having twice of the linear dimensions of the object. If the image is virtual, then the position of the object will be:

10. An equilateral prism is made of a material of refractive index √3. The angle of minimum deviation for the prism is:

11. How can be chromatic aberration be corrected

12. What change occurs, if the monochromatic light used in Young’s double slit experiment is replaced by white light?

13. A cylindrical vessel is filled with water as shown if figure. A hole should be bored so that the water comes out upto maximum distance of:

14. When a ray of light enters a glass slab, then

15. Two waves of intensities I and 4I superimposes. Then the maximum and minimum intensities are: