Explanation

According to Boyle's Law (P₁V₁ = P₂V₂), at constant temperature, pressure and volume are inversely proportional.

If the pressure is reduced to 1/4 of its initial value, the volume will increase 4 times to maintain equilibrium.

Explanation

Explanation

• Rod cells are responsible for vision in low light conditions, such as at night or in dimly lit environments.
• They are more sensitive than cone cells and can detect even a single photon of light.

Explanation

Dynamic range is the ratio between the largest and smallest values that a certain quantity can assume.

It is often used in the context of signals, like sound and light.

In music, dynamic range describes the difference between the quietest and loudest volume of an instrument, part or piece of music.

Explanation

Explanation

The Sun has already used up roughly half of its hydrogen fuel in approximately 4.6 billion years.

It is currently in the stable phase of its life cycle, converting hydrogen to helium through nuclear fusion.

In about 5 billion years, the Sun will exhaust its hydrogen fuel and begin its transformation into a red giant.

Explanation

Explanation

Galaxies are the basic building blocks of the universe, consisting of stars, gas, dust, and dark matter.

The universe contains billions of galaxies, each with millions or billions of stars.

Explanation

Tungsten is commonly used as the target material in X-ray tubes due to its high atomic number and ability to withstand the high heat generated during X-ray production.

Its properties make it efficient in producing X-rays.

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.