Previous year MCQs

General science UPPSC 1994 GS-I
Question

Television signals cannot be received beyond a certain distance because:

Answer & Solution

Answer: (Detailed Solution Below)

Option D: The surface of the earth is curved

Detailed Solution:

The correct answer is “The surface of the earth is curved”.
Television signals, especially those transmitted over the airwaves, are limited in range due to the curvature of the Earth's surface. This curvature can obstruct line-of-sight communication, leading to signal degradation beyond a certain distance.

Similar Questions:

Match list-I with list-II and select the correct answer using the code given below the lists:
List-I (molecules) - List-II (elements present)

A. Vitamin B12 - 1. Magnesium
B. Haemoglobin - 2. Cobalt
C. Chlorophyll - 3. Copper
D. Brass - 4. Iron

Code:
A B C D
  1. A) 2 4 1 3
  2. B) 2 1 3 4
  3. C) 4 1 2 3
  4. D) 3 4 2 1
Which one of the particles, claimed to have been discovered, can put Albert Einstein's theory of Relativity to the risk of being proved wrong?
  1. A) Microwave photons
  2. B) Neutrinos
  3. C) Liquid crystal
  4. D) Light emitting diodes
Super rice was developed by:
  1. A) M.S. Swaminathan
  2. B) G.S. Khush
  3. C) N.E. Borlaug
  4. D) P.K. Gupta
Which of the following types of glass can cut off ultraviolet rays?
  1. A) Soda glass
  2. B) Pyrex glass
  3. C) Jena glass
  4. D) Crookes glass
In electric apparatus 'earth' is used:
  1. A) to reduce the expenditure
  2. B) because the apparatus used 3-phase
  3. C) for safety
  4. D) in the form of fuse
Which of the following would be the smallest and fastest computer imitating brain working?
  1. A) Super computer
  2. B) Quantum computer
  3. C) Param-10,000
  4. D) IBM chips
An artificial satellite can be tracked very precisely from the earth by using:
  1. A) Doppler effect
  2. B) Radar
  3. C) Sonar
  4. D) Pulsar
Why does an iron nail float on mercury while it sinks in water?
  1. A) Due to less chemical interaction of iron with mercury than it is with water
  2. B) Iron is heavier than water and lighter than mercury
  3. C) Iron has greater density then water and lesser than, mercury
  4. D) Mercury is heavier than water
Ultra-violet radiation from sun light causes the reaction that produce which of the following?
  1. A) CO
  2. B) SO2
  3. C) O3
  4. D) Fluorides
Which one of the following parts of Mentha possesses maximum oil percentage?
  1. A) Root
  2. B) Stem
  3. C) Leaf
  4. D) Flower
Which one of the following is not related with ecological balance?
  1. A) Water management
  2. B) Afforestation
  3. C) Industrial Management
  4. D) Wild life protection
Which of the following elements is a semi conductor?
  1. A) Aluminium
  2. B) Silicon
  3. C) Silver
  4. D) Lead