Blocking part of a lens reduces the intensity (brightness) of the image but does not eliminate parts of the image or introduce patterns corresponding to the blocked areas.
Large number of thin strips of black paint are made on the surface of a convex lens of focal length 20 cm to catch the image of a white horse. The image will be
Asked in BPSC Prelims Exam 68th · Topic: Optics (Reflection and Refraction at plane and spherical surfaces)
More Physics questions
- The image formed by concave mirror is real, inverted and of the same size as that of the object. The position of the object should be
- Which one of the following is not true about the image formed by a plane mirror?
- In a periscope, the two plane mirrors are kept
- If the speed of light in air is $3 \times 10^8$ m/s, then the speed of light in a medium of refractive index $\frac{3}{2}$ is
- A non-spherical shining spoon can generally be considered as a
- The twinkling of a star is due to :
- Light travels in a straight line (rectilinear propagation of light). This statement does hold if the medium of travel for light is
- A ray of light is incident on a plane mirror at an angle of 40° with respect to normal. When it gets reflected from the mirror, it undergoes a deviation of
