General Knowledge (NDA/NA SOLVED PAPER 2023-I) (Part – B) (51 to 100)

Total Questions: 50

31. Which Governor General of Bengal underwent impeachment proceedings in the British Parliament?

Correct Answer: (c) Warren Hastings
Solution:The impeachment of Warren Hastings, the first governor-general of Bengal Presidency, was attempted between 1787 and 1795 in the Parliament of Great Britain. Hastings was accused of misconduct during his time in Calcutta, particularly relating to mismanagement and personal corruption.

32. Who among the following composed the 'Prayag Prashasti of Samudragupta?

Correct Answer: (a) Harishena
Solution:Prayag Prasashti is an inscription found at present day Prayagraj. It is written in sanskrit. As the name suggests it is a Prashasti or eulogy written by Harisena who was the court poet of Samudragupta. In this Prasashti he mentioned the achievements of Samudragupta.

33. Which one of the following kingdoms was founded by the two brothers Harihar and Bukka?

Correct Answer: (b) Vijayanagara
Solution:Brothers Harihar and Bukkaroy founded Vijaynagar, an independent Hindu kingdom. They were the sons of Sangama, a Hoysala ruler's court chieftain. The Vijyanagar kingdom, located on the southern bank of the river Tungabhadra, was perhaps South India's most famous empire.

34. At which one of the following places did the Danes establish their settlement in India?

Correct Answer: (d) Tranquebar
Solution:The Danish East India Company established their first factory at Tranquebar in Tamil Nadu in 1620.

35. A rectangle ABCD is kept in front of a concave mirror of focal length f with its corners A and B being, respectively, at distances 2f and 3f from the mirror with AB along the principal axis as shown in the figure. It forms an image A'B'C'D' in front of the mirror. What is the ratio of B'C' to A'D'?

Correct Answer: (c) 1/2
Solution:(c)

36. Shown in the figure are two plane mirrors XY and YZ (XY ⊥ YZ ) joined at their edge. Also shown is a light ray falling on one of the mirrors and reflected back parallel to its original path as a result of this arrangement. The two mirrors are now rotated by an angle θ to their new position X'YZ' , as shown. As a result the new reflected ray is at an angle from the original reflected ray. Then:

National Defence Academy Exam Questions on Light, Lenses, Mirrors

Correct Answer: (a) α = 0
Solution:

37. A railway wagon (open at the top) of mass M₁ is moving with speed v₁ along a straight track. As a result of rain, after some time it gets partially filled with water so that the mass of the wagon becomes M₂ and speed becomes v₂. Taking the rain to be falling vertically and water stationary inside the wagon, the relation between the two speeds v₁ and v₂ is:

Correct Answer: (c)
Solution:Applying the conservation of momentum initial momentum = final momentum
m₁v₁ = m₂v₂

38. Which one of the following statements is not true for a flute, a musical instrument?

Correct Answer: (d) Sound comes from a vibrating column of air inside as well as outside the flute.
Solution:Sound comes from the vibrating column of air inside the flute, not from both inside and outside. Therefore, statement (d) is false.

39. A positive charge is moving towards south in a space where magnetic field is pointing in the north direction. The moving charge will experience:

Correct Answer: (d) no deflecting force.
Solution:(d)

40. Which one of the following is not a main greenhouse gas?

Correct Answer: (b) Oxygen
Solution:Oxygen is not an example of greenhouse gases. The main greenhouse gases whose concentrations are rising are carbon dioxide (CO₂) Methane (CH₄) Nitrous Oxide, Hydrochlorofluorocarbons
(HCFCs), Hydrofluorocarbons (HFCs) and Ozone in the lower atmosphere.