Explanation

• Diffused reflection occurs when parallel rays of light hit a rough surface, scattering in different directions.
• This type of reflection is characterized by a random change in direction of the reflected light, resulting in a diffuse or scattered beam.

Examples:

• Wall
• Paper
• Cloth
• Cardboards

Explanation

• A gear (cog) is a toothed wheel that meshes with other gears to transmit rotational motion or change the direction of force.
• The pointed edges like teeth are used to engage with other gears and transmit power.

Explanation

• When Hyder hits the nail with a hammer, kinetic energy (the energy of motion) is involved as the hammer moves towards the nail.
• Sound energy is also involved as the hammer strikes the nail, producing a sound.
• However, electrical energy is not involved in this process.

Explanation

• Jupiter is a non-luminous object.
• Unlike burning coal, glassware and fireworks, which either emit or reflect light in ways that are noticeable.
• Jupiter does not generate its own light but reflects the light of the Sun.

Explanation

• When the half of the Earth is facing the Sun, it experiences Day, as the Sun's light illuminates that region.
• The other half of the Earth, facing away from the Sun, experiences Night.

Explanation

• Nights are cooler in the deserts than in the plains because Sand radiates heat more quickly than the earth.
• Because deserts have such little water vapor in the air, it makes it harder to trap heat or cold in a desert.
• At night, the sun no longer heats the desert and the heat from the day doesn't stay trapped.
• Because of this, some deserts can get cold at night, dropping to below 40F, which is definitely coat weather.

Explanation

The odd one out is: final velocity = initial_velocity + (2 x acceleration x distance moved)

The other three equations are the standard equations of uniformly accelerated motion:

• 1. v = u + at (final velocity = initial velocity + acceleration x time)
• 2. s = ut + 0.5at² (distance moved = initial velocity x time + 0.5 x acceleration x time²)
• 3. v² = u² + 2as (final velocity² = initial velocity² + 2 x acceleration x distance moved)

Explanation

The statement "Highly polished mirror surfaces are very good radiators" is wrong.

Explanation

When the stress applied to the body is increased beyond the maximum value and then removed after some time, the body will "not be able to return to its original position." This situation is known as plastic deformation, where the body undergoes permanent deformation.

Explanation

The electric field due to a positive charge points away from the charge, i.e., radially outward.

Field lines show the direction a positive test charge would move.