Explanation

A dull black surface absorbs maximum radiation because it doesn’t reflect or transmit light.

Such surfaces are used in experiments and devices like blackbody radiators for accurate heat absorption.

Explanation

Step 1: Calculate the value of √0.0121

√0.0121 = √121 × 10^-4 = 11 × 10^-2= 0.11

Step 2: Calculate the value of (0.1)²

(0.1)^2 = 0.01

Step 3: Compare the values

√0.0121 = 0.11

0.12

(0.1)^2 = 0.01

The largest value is 0.12.

Explanation

Formula:

Gravitational Potential Energy (GPE) = m × g × h

Where:

m = mass = 12 kg

g = gravitational acceleration = 9.8 m/s²

h = height = 5 m

GPE = 12 × 9.8 × 5 = 588 J

Explanation

The center of gravity is the point where the entire weight of an object appears to act.

It can lie inside or outside the object, depending on its shape (e.g., outside for a ring or hollow sphere).

Explanation

Given f(x) = 6x/(3x - 2)

The denominator cannot be zero:

3x - 2 ≠ 0

3x ≠ 2

x ≠ 2/3

So, the domain of f(x) is all real numbers except x = 2/3.

The answer is R - {2/3}.

Explanation

Counseling helps not just in solving existing problems (remedial) but also in avoiding future ones (preventive).

A preventive approach focuses on early guidance to reduce potential issues.

Explanation

The Magnifier tool is used to zoom in or enlarge a specific part of a drawing or image.

It helps in viewing and editing details more clearly without changing the actual size of the drawing.

Explanation

"Invaded" means to enter or take over a place aggressively or in large numbers.

Here, ants took over the tent, making "take over" the best synonym.

Invaded means داخل ہونے یا سنبھالنے کے لئے

Explanation

Dot pitch (also known as pixel pitch) is the distance between two same-colored pixels on a screen.

A smaller dot pitch means a sharper and clearer display quality.

Explanation

The headmaster usually handles staffing, controlling, and coordinating within the school.

Recruiting is typically done by higher authorities or education departments, not the headmaster directly.