EASY
JEE Main
IMPORTANT
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Given below are two statements :
Statement I : Electromagnetic waves are not deflected by electric and magnetic field.
Statement II : The amplitude of electric field and the magnetic field in electromagnetic waves are related to each other as .
In the light of the above statements, choose the correct answer from the options given below:
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Important Questions on Electromagnetic Waves
MEDIUM
JEE Main
IMPORTANT
A point source of light is placed at the centre of curvature of a hemispherical surface. The source emits a power of . The radius of curvature of hemisphere is and the inner surface is completely reflecting. The force on the hemisphere due to the light falling on it is ______ .
EASY
JEE Main
IMPORTANT
A point source of emits light with efficiency. At a distance of from the source, the intensity produced by the electric field component is:
EASY
JEE Main
IMPORTANT
Match List I and List II
| List I | List II | ||
| A | Microwaves | I | Physiotherapy |
| B | UV rays | II | Treatment of cancer |
| C | Infra-red rays | III | Lasik eye surgery |
| D | X-rays | IV | Aircraft navigation |
Choose the correct answer from the option given below:
EASY
JEE Main
IMPORTANT
Match the List-I with List-II:
| List I | List II | ||
| A | Microwaves | I | Radioactive decay of the nucleus |
| B | Gamma rays | II | Rapid acceleration and deceleration of electron in aerials |
| C | Radio waves | III | Inner shell electrons |
| D | X-rays | IV | Klystron valve |
Choose the correct answer from the options given below:
EASY
JEE Main
IMPORTANT
The ratio of average electric energy density and total average energy density of electromagnetic wave is:
