Previous year MCQs

General science UPPSC 2018 GS-I
Question

Which of the following electro magnetic radiations has the maximum energy?

Answer & Solution

Answer: (Detailed Solution Below)

Option D: X-rays

Detailed Solution:

The correct answer is “X-rays”.
X-rays have the maximum energy among the given electromagnetic radiations.

Electromagnetic radiations are classified based on their wavelength or frequency. The energy of a radiation is directly proportional to its frequency and inversely proportional to its wavelength.

X-rays have very short wavelengths and high frequencies, which gives them a very high energy level.

In order of increasing frequency - radio waves, television waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

Similar Questions:

Which of the following States of India has the longest coastline?
  1. A) Maharashtra
  2. B) Andhra Pradesh
  3. C) Kerala
  4. D) Gujarat
Which one of the following metal is not attracted by a magnet:
  1. A) Iron
  2. B) Nickel
  3. C) Cobalt
  4. D) Aluminium
Which of the following vitamin is responsible for coagulation of blood in human being ?
  1. A) Vitamin K
  2. B) Vitamin E
  3. C) Vitamin A
  4. D) Vitamin C
The minimum distance of clear vision for a normal healthy eye of human being is supposed to be
  1. A) 50 cm
  2. B) 10 cm
  3. C) 15 cm
  4. D) 25 cm
The number of images of an object placed between two parallel mirrors is:
  1. A) Two
  2. B) One
  3. C) Six
  4. D) Infinite
The rain-drops are spherical because:
  1. A) they fall from big height
  2. B) the air has resistance
  3. C) the water has surface tension
  4. D) none of the above
We obtain turmeric from which part of the plant?
  1. A) Stem
  2. B) Root
  3. C) Fruit
  4. D) Flower
The disease caused due to deficiency of iron is known as:
  1. A) Colour-blindness
  2. B) Night-blindness
  3. C) Anaemia
  4. D) Tuberculosis
Match List - I with List - II and select the correct answer from the codes given below:

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

Codes:
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
On the basis of Panama Papers, the Prime Minister of which of the following countries was sentenced to 10 years in jail for corruption?
  1. A) Maldives
  2. B) Trinidad
  3. C) Pakistan
  4. D) None of the above
According to the UN Department of Economic and Social Affairs (UN-DESA) what percentage of world's total population is currently living in urban areas?
  1. A) 25
  2. B) 35
  3. C) 45
  4. D) 55
Which of the following pairs is NOT correctly matched ?
Quantity – S. I. Unit
  1. A) Activity of radio active substance – Curie
  2. B) Power of lense – Diopter
  3. C) Heat – Joule
  4. D) Pressure – Pascal