Question Discussion & Solution

The correct answer is 8 minutes.

• It takes 8 minutes to reach the earth.

Key Points

• Light is a form of energy which is propagated as electromagnetic waves.
• In the spectrum of electromagnetic waves, it lies between the ultra-violet and infra-red region and has a wavelength between 3900 Å to 7800 Å.
• light behaves as wave and particle both. 
• Speed of light is maximum in vacuum and air (3×10⁸ m/s).
• It is a transverse wave.
• It takes 8 min 19 s to reach on the earth from the sun.
• The light reflected from the moon takes 1.28 s  to reach earth.

Additional Information

• Electromagnetic waves are transverse, hence light is a transverse wave.
• Wave nature of light explains rectilinear propagation, reflection, refraction, interference, diffraction and polarization of light. 
• Refractive Index of a medium is defined as the ratio of the speed of light in a vacuum to the speed of light in the medium. 
• Light is measured with two main alternative sets of units: radiometry consists of measurements of light power at all wavelengths, while photometry measures light with a wavelength.

The correct answer is First.

• As of June 2015, First place does Rajasthan have in solar power generation between Indian states.

• Solar power capacity of Rajasthan
  • ​According to data released by the Union ministry of new and renewable energy on June 4, 2015, Rajasthan has grabbed the number one position in the country with an installed capacity of 1,167 megawatts against Gujarat's 1,000 MW.

Additional Information

Solar power capacity of India: ​Top 5 states

Key Points

General attributes of a good language:

• Clarity, simplicity, and unity: provides both a framework for thinking about algorithms and a means of expressing those algorithms 
• Cost of use: program execution, program translation, program creation, and program maintenance Orthogonality: every combination of features is meaningful
• Naturalness for the application: program structure reflects the logical structure of the algorithm
• Support for abstraction: program data reflects problem being solved 
• Ease of program verification: verifying that the program correctly performs its required function
• Programming environment: external support for the language
• Portability of programs: transportability of the resulting programs from the computer on which they are developed to other computer systems

Hence the correct answer is Non-portability.

The correct answer is connective.

• Blood is a type of connective tissue. 

Key Points

• ​Connective tissue
  • This is a kind of biological tissue that supports, connects, or separates different types of tissues and organs of the body.
  • Examples- Tendons, ligaments, cartilage, bone, blood.
• Blood has a fluid (liquid) matrix called plasma, in which red blood corpuscles (RBCs), white blood corpuscles (WBCs), and platelets are suspended.
  • The plasma contains proteins, salts, and hormones.
  • Blood flows and transports gases, digested food, hormones, and waste materials to different parts of the body.

Additional Information

• Epithelial tissue:
  • The epithelial tissues are formed by cells that cover the organ surface such as the surface of the skin, the airways, the reproductive tract, and the inner lining of the digestive tract.
• Muscular tissues:
  • Muscular tissue is a soft tissue that composes muscles.
  • Skeletal muscle (voluntary muscles), cardiac muscle (involuntary muscles) are examples of it.
• Nervous tissue:
  • The main components of the nervous system are the brain, spinal cord, and nerves which regulate and control body functions.
  • It is made up of neurons that have important functions in the nervous system.

The correct answer is Kalology.

Key Points

• The study of human beauty is called Kalology.
  • Kalology is the study of beauty and the ways in which beauty influences society.
  • This study is focused primarily on human attractiveness, rather than the broader field of aesthetics, and was popularized during the 19th century when philosophers attempted to codify beauty and create a uniform system for evaluating it.
  • A scale was even proposed, probably jokingly, which rated beauty in terms of the theoretical beauty of Helen of Troy, who allegedly had a face to launch 1,000 ships.

Additional Information