Explanation

Lamp is not a form of energy; it is a device that uses electrical energy to produce light.

Sound, Light, and Heat are all valid forms of energy.

Explanation

The formula relating arc length (l), radius (r), and central angle (θ) is:

l = rθ

Given:

l = 45 cm

r = 9 cm

θ = l / r

= 45 / 9

= 5 radians

Explanation

Irregular galaxies have no fixed shape or structure.

They often appear chaotic and lack the symmetry of spiral or elliptical galaxies.

Explanation

The words like shall, should, ought to, will, would, must etc. are called Modal Verbs.

Modal verbs express necessity, possibility, or obligation.

"ought to" indicates a recommendation or obligation.

Explanation

Schools and teachers are considered the primary educators as they provide foundational knowledge and skills to children.

They play a crucial role in shaping the intellectual, social, and emotional development of the child.

Explanation

The Basic Education Scheme aims to provide fundamental education to meet the basic needs of individuals.

It ensures access to essential learning for personal and social development.

Explanation

The citizens of FATA (Federally Administered Tribal Areas) were granted the right to vote in 1997 general elections.

Before this, only Maliks (tribal elders) had voting rights under a limited franchise system.

Explanation

Let's solve the equation step by step:

2(x - 2) - 5(x - 5) = 4(x - 8) - 2(x - 2)

Expanding both sides:

2x - 4 - 5x + 25 = 4x - 32 - 2x + 4

Combining like terms:

-3x + 21 = 2x - 28

Adding 3x to both sides:

21 = 5x - 28

Adding 28 to both sides:

49 = 5x

Dividing both sides by 5:

x = 49/5

x = 9.8

Explanation

Dignity is a noun because it represents a thing or concept (the state of being worthy of respect).

In the sentence, it refers to a quality or characteristic.

Explanation

The word psychology comes from the Greek words "psyche" (meaning mind or soul) and "logos" (meaning study).

So, it literally means the study of the mind and soul.