Explanation

• Seasonal rainfall is mainly controlled by the monsoon system.
• Monsoon winds change direction with seasons, bringing rain in summer and dry conditions in winter.
• It is most important in South Asia, including Pakistan.

Last verified on 23-05-2026

Explanation

• Pakistan’s unity is mainly supported by a shared Islamic ideological identity.
• Despite ethnic and linguistic diversity, common religion helps reduce internal divisions.
• This shared ideology promotes national cohesion.

Last verified on 23-05-2026

Explanation

• The creation of Pakistan was based on the idea that Muslims and Hindus were two separate nations with different beliefs and lifestyles.
• This is known as the Two-Nation Theory.
• It emphasized ideological, religious, and cultural differences rather than geography or economy.

Last verified on 23-05-2026

Explanation

• British India had a permanent structural divide between Hindus and Muslims in politics and representation.
• Muslims felt they would remain a permanent minority, unable to protect their rights.
• This perception strengthened the demand for a separate homeland.

Last verified on 23-05-2026

Explanation

The energy of a photon is calculated using the formula E = hf, where:

• h = Planck’s constant
• f = frequency of the photon

This shows that photon energy is directly proportional to its frequency.

Last verified on 23-05-2026

Explanation

• When frequency is above the threshold, electrons are emitted from the metal surface.
• Increasing intensity means more photons fall on the surface, so more electrons are emitted.

Last verified on 23-05-2026

Explanation

• Highest tides are called Spring tides.
• They occur when the Sun, Earth, and Moon are aligned in a straight line.
• Their gravitational forces combine and produce very high and very low tides.

Last verified on 23-05-2026

Explanation

• A dam is a large barrier built across rivers to store water.
• It controls floodwater by regulating the flow of excess water.
• Dams also help in irrigation and hydroelectric power generation.

Last verified on 23-05-2026

Explanation

• The transport sector uses energy mainly for running vehicles like cars, buses, trucks, trains, and airplanes.
• It depends mostly on petroleum fuels such as petrol, diesel, and CNG.
• This sector is one of the largest consumers of fossil fuels worldwide.

Last verified on 23-05-2026

Explanation

• Natural gas is commonly used in homes for cooking food and heating water or rooms.
• It is a fossil fuel mainly composed of methane gas.
• It burns cleaner than coal and oil.
• It producing less smoke and pollution.

Last verified on 23-05-2026