Physics
Assertion (A) : For a glass block, the i vs. r graph is a straight line.
Reason (R) : When a ray of light undergoes refraction, it follows Snell's law.
- Both Assertion and Reason are true, and the Reason is the correct explanation of the Assertion.
- Both Assertion and Reason are true, but Reason is not the correct explanation of the Assertion.
- Assertion is true, but the Reason is false.
- Assertion is false, but the Reason is true.
Related Questions
The given figure depicts the graph of work done vs. displacement under a constant force of 10 N. Which of the following statements is true?
- Force is acting at an angle of 0° with the displacement.
- Force is acting at an angle of 45° with the displacement.
- Force is acting at an angle of 60° with the displacement.
- Force is acting at an angle of 90° with the displacement.
During his experiments with a single movable pulley, Jas determined the effort, mechanical advantage and efficiency as X, Y & Z, respectively. Subsequently, after lubricating the pulley thoroughly, he recalculated the effort, MA and efficiency. X', Y' & Z' respectively. Which of the following relationships accurately represents the scenario?
- X' > X
- Y' < Y
- Z' > Z
- Z' = Z
…………… of UV > …………… of microwaves
The quantity suitable for filling in both the blanks is:
- speed in vacuum
- speed in a medium
- frequency
- wavelength.
Sumit, a teenager, enjoys playing his music loudly. However, his grandmother consistently lowers the volume of the music player. Analyze the wave to identify which characteristic of the wave has been altered when the grandmother reduces the volume.
- The length PS becomes more.
- The length SR becomes less.
- The length QR becomes less.
- The length PR becomes less.