Question Discussion & Solution

The correct answer is 1526.

• The first battle of Panipat was fought in 1526.

Key Points

• The First Battle of Panipat (21 April 1526) fought near a small village of Panipat Haryana.
• The battle was fought between the invading forces of Zahir-ud-din Babur and Lodi Empire during the rule of Ibrahim Lodi.
• The Mughal forces of Babur, the ruler of Kabulistan, defeated the ruling army of Ibrahim Lodi, Sultan of Delhi.
• Babur’s tactics of Tulughma and Araba led him to victory.

Additional Information

• Tulughma: it means dividing the whole army into various units, viz. the Left, the Right and the Centre.
• Araba: The centre forward division was then provided with carts which were placed in rows facing the enemy and tied to each other with animal. 
• The Second Battle of Panipat was fought between the forces of Samrat Hem Chandra Vikramaditya and  the army of Akbar, on November 5, 1556
• The Third Battle of Panipat took place on 14 January 1761, at Panipat between the Maratha Empire and the King of Afghanistan, Ahmad Shah Durrani.

The correct answer is 14-Nov-2012.

• The POSCO Act was enacted on 14-Nov-2012.

Key Points

• The POSCO Act,2012:
  • The act is an acronym Protection Of Children from Sexual Offences Act.
  • The act was enacted on June 19, 2012.
  • It was enforced on November 14, 2012.
  • The act was enacted to protect children from offences of sexual assault, sexual harassment, and pornography and safeguard the interest and well-being of children.
  • According to the act, the definition of a child is any person below eighteen years of age.
  • It also defines different forms of sexual abuse which include penetrative and non-penetrative assault as well as sexual harassment and pornography.

1^st letter: Decrease by - 1

O - 1→ N – 1 → M - 1 → L – 1 → K

2^nd letter: increase by + 2

L + 2 → N + 2→ P + 2 → R + 2 → T

3^rd letter: Decrease by - 1

T - 1→ S – 1 → R - 1 → Q – 1 → P

The correct answer is option 1.

Concept:

The auto storage class is the default storage class for all local variables. The variables defined using the auto storage class are called local variables. Auto stands for automatic storage class. A variable is in the auto storage class by default if it is not explicitly specified. The scope of an auto variable is limited to the particular block only.

Storage Classes:

Storage Classes are used to describe the features of a variable/function. These features basically include the scope, visibility, and lifetime which help us to trace the existence of a particular variable during the runtime of a program. C language uses 4 storage classes.

Hence the correct answer is auto.

CONCEPT:​

• Power of Lens: The inverse of the focal length is known as the power of the lens.
  • It shows the bending strength for the light ray of the lens.

\(P = \frac{1}{f}\)

where P is the power of the lens and f is the focal length of the lens.

• The unit of power of a lens is Dioptre when the focal length of the lens is taken in meter (m).
• The focal length of the convex lens (converging) is positive and that of the concave lens (diverging) is negative. 

CALCULATION:

Given that lens is diverging. so focal length is negative.

f = -5 cm = -0.05 m

Power of lens \(P = \frac{1}{f} =\frac{1}{-0.05} = -20 D\)

P = -20 D

So the correct answer is option 2.