A student does the experiment on tracing the path of a ray of light passing through a rectangular glass slab for different angles of incidence. He can get a correct measure of the angle of incidence and the angle of emergence by following the labelling indicated in figure
Important Questions on Multiple Choice Questions
The following four circuits have been made for studying the dependence of current on the potential difference across a resistor.
The correct circuit is:
To study the dependence of current () on the potential difference () across a resistor, the following observations were made by four students A, B, C and D.
| Student | Reading No. | Reading No. | Reading No. |
The teacher found that one of the student has made wrong observations. The student who made the mistake is:
A student traces the path of a ray of light passing through a rectangular glass slab.
For measuring the angle of incidence, he must position the protractor in the manner shown in figure:
A student performed the experiment of glass slab and with different angles of incidence measured the angles of refraction and emergence in each case. He then recorded his observations as given in the table.
| S.No. | Angle of incidence | Angle of refraction | Angle of emergence |
| A | |||
| B | |||
| C | |||
| D |
The correct observation is :
In the experiment on tracing the path of a ray of light passing through a rectangular glass slab, the correct setting of the protractor (D), for measuring the angle of incidence, and the angle of emergence correspond, respectively, to diagrams :
An experiment for tracing the path of ray of light through a glass slab was set up in the laboratory and ray diagram was drawn as shown here.
The teacher asked the students to identify the refracted ray. The correct answer is :
