Previous year MCQs

General science UPPSC 2012 GS-1
Question

The colour of light is determined by its

Answer & Solution

Answer: (Detailed Solution Below)

Option B: Wavelength

Detailed Solution:

The correct answer is “Wavelength”.
The color of light is determined by its Wavelength.

Different wavelengths of light correspond to different colors in the visible spectrum. For example, red light has a longer wavelength, while blue light has a shorter wavelength.

Similar Questions:

Which one of the following pairs is not correctly matched?
  1. A) Discovery of Meson – Hideki Yukawa
  2. B) Discovery of positron – C.D. Anderson & U.F. Hess
  3. C) Theory of energy production – H.A. Bethe in the sun and stars
  4. D) Synthesis of transuranic elements – Enrico Fermi
Given below are two statements, one is labelled as Assertion (A) and the other as Reason (R)

Assertion (A) : Relative humidity decreases with increasing air temperature.
Reason (R) : Absolute humidity increases with increasing evaporation.

Select the correct answer from the codes given below:
  1. A) Both(A) and (R) are true, but (R) is not the correct explanation of(A).
  2. B) (A) is false, but (R) is true
  3. C) Both (A) and (R) are true and (R) is the correct explanation of (A)
  4. D) (A) is true, but (R)is false.
Use of polished rice in human diet causes following diseases:
  1. A) Rickets
  2. B) Anemia
  3. C) Goitre
  4. D) Beriberi
What is the name of the luxury cruise ship which capsized near the western coast of Italy on 13th January 2012
  1. A) Costa Allegra
  2. B) Costa Concordia
  3. C) Costa Fortuna
  4. D) Enrica Lexie
Match list-I with list-Il and select the correct answer using code given below—
List - I List - II (Diseases) (Factors)

(A) Peptic ulcers - (1) Virus
(B) Dengue - (2) Protozoa
(C) Elephant Foot - (3) Worm
(D) Malaria - (4) Bacteria
Code -
  1. A) A-(4), B-(2), C-(3), D-(1.)
  2. B) A-(4), B-(1), C-(3), D-(2)
  3. C) A-(4), B-(1), C-(2), D-(3)
  4. D) A-(1), B-(4), C-(3), D-(2)
Which of the following is found in the composition of vitamin D?
  1. A) Retinal
  2. B) Folic acid
  3. C) Ascorbic acid
  4. D) Calciferol
Ultrasonics are sound waves of frequency:
  1. A) Greater than 20, 000 Hz
  2. B) Less than 10, 000 Hz
  3. C) Equal to 1000 Hz
  4. D) None of these
Which one of the following is not a natural polymer:
  1. A) wool
  2. B) silk
  3. C) leather
  4. D) nylon
When a body is taken from the earth to the moon
  1. A) Its weight increases
  2. B) Its weight decreases
  3. C) Its weight remains unchanged
  4. D) It becomes completely weightless
National Environmental Engineering Research Institute is situated at
  1. A) Nagpur
  2. B) Pune
  3. C) Lucknow
  4. D) New Delhi
Who among the following Journalists has written his autobiography entitled the "Lucknow Boy"
  1. A) Vinod Mehta
  2. B) Alok Mehta
  3. C) Narendra Mohan
  4. D) Pritish Nandi
First computer was made by
  1. A) Bill Gates
  2. B) Bill Clinton
  3. C) Charles Babbage
  4. D) Marconi