12TH Physics - Electromagnetic Waves MCQS QUIZ

https://ravitestpapers.com/practice/competitive/neet

https://ravitestpapers.com/practice/state/12

https://ravitestpapers.com/practice/cbse/12

CLICK ABOVE LINK FOR PDF FILES

Electromagnetic Waves & Spectrum MCQ Test

1. Which electromagnetic radiation is used for viewing objects through fog?

Microwave
Gamma rays
X-rays
Infrared

2. Which of the following is FALSE for electromagnetic waves?

Transverse
Non-mechanical waves
Longitudinal
Produced by accelerating charges

3. Gamma rays are used in the treatment of ______.

Cancer
Polio
AIDS
Tuberculosis

4. Forged documents are detected using ______.

X-rays
UV rays
IR rays
Microwaves

5. Long-distance photographs are taken using ______.

Radio waves
Visible light
X-rays
Infrared rays

6. Every source has its own characteristic ______ spectrum.

White
Emission
Scattering
Absorption

7. An electric filament lamp produces a ______ spectrum.

Line
Band
Continuous
Absorption

8. Which of the following gives a continuous emission spectrum?

Electric filament lamp
Sodium vapour lamp
Gas discharge tube
Calcium salt in Bunsen flame

9. Absorption spectrum is the characteristic of the ______.

Emitting substance
Absorbing substance
Reflecting substance
Penetrating substance

10. The wavelength of electromagnetic waves produced in Hertz's experiment was ______.

6 mm
60 m
6000 mm
60 cm

11. The velocity of light in vacuum can be changed by changing ______.

Frequency
Amplitude
Wavelength
None of these

12. In vacuum, the speed of light depends upon ______.

Colour
Wavelength
Frequency
None of the above

13. The velocity of light is maximum in ______.

Diamond
Water
Vacuum
Glass

14. Electromagnetic waves do not transport ______.

Energy
Charge
Momentum
Information

15. Which EM waves are used to destroy cancer cells?

Radio waves
Infrared
Gamma rays
Ultraviolet rays

16. Which of the following is a special aspect of electromagnetic waves?

Can be deflected by electric field
Can be deflected by magnetic field
Can be deflected by both electric and magnetic fields
None of these

17. Who first produced electromagnetic waves experimentally?

J.C. Bose
Marconi
Maxwell
Hertz

18. The speed of electromagnetic waves is the same for all ______ in vacuum.

Wavelengths
Media
Intensities
Frequencies

19. Electromagnetic waves are produced by ______.

Static charge
Moving charge
Accelerating charge
Chargeless particles