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Test your physics knowledge for CDS/NDA. Attempt this quiz to increase your scores. The passing percentage is 70%. All the best.
#1. Which of the following is used by dentist to see the image of teeth of a patient?
None of these
#2. What was invented by Jackarias Jansen?
#3. Which of the following reflects more sunlight?
Paddy crop land
Land covered with snow
#4. An air bubble in water will act like a:
#5. Penetrating power of X-rays does not depend upon:
Current in the filament
#6. The velocity of light is maximum in :
#7. The waves used in sonography are:
#8. Cosmic rays are:
are uncharged particles
can be charged and uncharged
None of the above
#9. An acoustically good hall should have:
Adequate loudness only
Optimum reverberation only
Uniform distribution of sound only
All of above
#10. The electromagnetic radiation most prevalent in the atmosphere is: