Question Discussion & Solution

The correct answer is 16%.

• The Tourism sector contributes about 16% to the total economy of Rajasthan.

Key Points

• Tourism in Rajasthan:
  •  

The pattern followed here is:

In every alternative, the numbers at the 2^nd and the 3^rd position are exactly divisible by the number at the 1^st position, while in (8, 801, 624), 801 is not exactly divisible by 8.

The correct answer is Energy.

• Energy can neither be created nor be destroyed.

Key Points

• First Law of Thermodynamics:
  • It is also known as the Law of Conservation of Energy and states that energy cannot be created or destroyed in an isolated system.
  • Thermodynamics was discovered by Ludwig Boltzmann.
  • Albert Einstein also said that "Energy cannot be created or destroyed. It can only be changed from one form to another."

Additional Information

• Force is that external cause which when acts on a body, changes or tries to change the initial state of the body.
  • Force = mass × acceleration
  • Its S.I. unit is Newton (kg. m s-2)
• Momentum is the property of a moving body and is defined as the product of mass and velocity of the body.
• It is a vector quantity.
  • Its SI unit is kg m/s.
• The rate of doing work is called power.
  • SI unit of power is watt or Joule Per second named as a respect to the scientist James Watt.
  • It is a scalar quantity.

The correct answer is 740 meters.

• The approximate height of Dhosi hill above sea level is 740 meters.

Key Points

• Dhosi hill
  • ​Dhosi Hill is an extinct volcano.
  • It is standing alone at the northwest end of the Aravalli mountain range, of which it is a part, with height varying from about 345 to 470 meters from the surrounding land.
  • It is 740 meters from sea level. 
  • Dhosi Hill is located on the borders of Haryana and Rajasthan.

Additional Information

Top 3 Major mountain peaks of the Aravali Ranges of Rajasthan:

The Correct answer is Uniform motion.

Key Points

• Motion​:
  • It is a phenomenon in which an object changes its position with respect to time.
  • All motions are relative to some frame of reference. 
  • There are two types of motion:
    • Uniform Motion
    • Non-uniform Motion
• Uniform motion:
  • If an object is traveling with uniform motion, it is moving in a straight line at a constant speed.
  • For example, An object falling at terminal velocity experiences the same air resistance as its weight.
  • Newton's first law can be used to explain the movement of objects traveling with uniform motion.
  • Newton's first law is a body that is at rest or moving at a uniform rate in a straight line will remain in that state until some force is applied to it.

​Additional Information

• Retarding motion: The Motion in which the speed of the body gradually decreases.
• Non-uniform motion: If a body covers unequal distances in equal intervals of time
• Non-linear Motion: Nonlinear motion is motion along a curved path; It is the combination of two components of motion' horizontal motion (without acceleration) vertical motion (under the acceleration of gravity).