Lakshya Education MCQs

Question: In radio-communication, the signals emitted by transmitting antenna are reflected on
Options:
A.Stratosphere
B.Ozonosphere
C.Ionosphere
D.Troposphere
Answer: Option C

Submit Answer & Explaination

Earn Reward Points by submitting Detailed Explaination for this Question

More Questions on This Topic :

Question 1. Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this?
I.Diffusion
II.Refraction
III.Internal reflection
  1.    I, II and III
  2.    I and II
  3.    II and III
  4.    I and III
Answer: Option C
Question 2. Natural radioactivity was discovered by
  1.    Marie Curie
  2.    Ernest Rutherfor
  3.    Henri Becquerel
  4.    Enrico Fermi
Answer: Option C
Question 3. One nanometer is equal to
  1.    10-6m
  2.    10-8m
  3.    10-9m
  4.    10-5m
Answer: Option C
Question 4. The audio signals of TV are
  1.    Amplitude modulated
  2.    Frequency modulated
  3.    Unmodulated
  4.    Velocity modulated
Answer: Option B
Question 5. The GPS device in an automobile uses which communication channel?
  1.    Satellite
  2.    Microwave
  3.    Radio frequency
  4.    Infrared
Answer: Option A
Question 6. In a optical fibre cable, the signal is propagated along the
  1.    Inner Core
  2.    Cladding
  3.    Both core and cladding
  4.    Surface and cladding
Answer: Option A

Check all Questions in this Topic : Click HERE