Explanation

Given:

Breadth = 1/5 × Length

Perimeter = 24m

Let length = L

Breadth = L/5

Perimeter formula: P = 2(L + B)

24 = 2(L + L/5)

24 = 2(6L/5)

24 = 12L/5

24 × 5 = 12L

120 = 12L

L = 10m

Explanation

A comet grows a tail when it approaches the Sun due to the heat causing the ice to vaporize, releasing gas and dust.

This process forms a glowing coma and tail, which always points away from the Sun due to solar wind.

Explanation

Explanation

Let's solve this problem:

Initially, food is enough for 36 people for 20 days.

Total food = 36 people * 20 days = 720 people-days

When 12 more people come, the total number of people becomes:

36 + 12 = 48

Now, let's find out how many days the food will last for 48 people:

720 people-days / 48 people = 15 days

Explanation

Negative reinforcement strengthens behavior by removing an unpleasant stimulus after the desired response.

It usually follows prior conditioning, encouraging repeated behavior to avoid discomfort.

Explanation

A lever consists of three main parts: Load (the object to be moved), Effort (the force applied), and Fulcrum (the pivot point).

These parts work together to make lifting or moving objects easier.

Explanation

Nerve cells (neurons) generally do not divide after maturity and can live a lifetime.

They are responsible for transmitting signals in the body and are long-lived.

Explanation

Given Ahmed's income is Rs. 85,000 and expenditure is Rs. 51,000:

The ratio of income to expenditure is 85,000 : 51,000.

To simplify, divide both parts by their greatest common divisor, which is 17,000:

85,000 / 17,000 = 5

51,000 / 17,000 = 3

So, the ratio is 5:3.

Explanation

A colour service provides postal-like services, handling letters and parcels.

It operates similar to postal systems but may differ slightly in method or appearance.

Explanation

Given:

Arc length = 2.5 cm

Diameter = 6 cm, so radius (r) = 3 cm

The formula for arc length is:

Arc length = θr

2.5 = θ * 3

θ = 2.5 / 3

θ = 0.833