Explanation

Venus is the hottest planet in the solar system.

Venus has no moons.

The "black planet" is Venus.

The second closest planet to the sun is Venus.

The slowest-rotating planet is Venus.

Venus is similar in size to Earth.

Additional information:

Eight planets in the solar system: 

1. Mercury
2. Venus
3. Earth
4. Mars
5. Jupiter
6. Saturn
7. Uranus
8. Neptune

Explanation

In irregular (diffused) reflection, light rays hit a rough surface.

This causes them to reflect in different directions and angles.

Explanation

Electric field intensity (E) is defined as force per unit charge: E = F/q.

So its unit is Newton/Coulomb (N/C).

Explanation

Sound, a mechanical disturbance from a state of equilibrium that propagates through an elastic material medium.

Explanation

Copper is a good conductor of heat.

That's why it’s used in cooking utensils and electrical wiring.

Wood, plastic, and glass are poor conductors (insulators), meaning they do not transfer heat easily.

Explanation

An electric field is the region around a charged particle where it exerts a force on other charges.

It is represented by field lines.

It is measured in newtons per coulomb (N/C).

Explanation

• The asteroid belt is a region of space where many small rocky bodies, called asteroids, orbit the Sun.
• It's also known as planetoids or minor planets.
• It is located between the orbits of Mars and Jupiter, spanning from about 2.2 to 3.2 astronomical units (AU) from the Sun.

Explanation

Magnification refers to increasing the size of an image or object.

It is commonly used in optics, like microscopes or lenses, to enlarge small details.

Explanation

The period of a physical pendulum can be expressed in different ways, depending on the physical parameters of the pendulum. The physical pendulum is a rigid body that rotates around a fixed axis, and its period is given by:

• T = 2π√(I/Mgd) : This is the most general expression for the period of a physical pendulum, where I is the moment of inertia of the pendulum about the axis of rotation, M is the mass of the pendulum, g is the acceleration due to gravity, and d is the distance from the axis of rotation to the center of mass of the pendulum.
• T = 2π√(1/x) : This expression is a simplified version of the previous one, where x = (Mgd)/I.
• T = √(4L/g) : This expression is applicable when the physical pendulum is a simple pendulum, where L is the length of the pendulum.

Explanation

The Milky Way is the galaxy that contains our solar system

It consists of 100–400 billion stars

The Milky Way is a huge collection of: 

• stars
• dust
• gas

It is visible as a hazy band of white light

Additional Information

The nearest galaxy to our Milky Way is Andromeda

Largest galaxy in the Universe is a Spiral galaxy