Explanation

Earth is the third nearest planet to the sun.

Mercury is the nearest planet to the sun.

Venus is the nearest planet to the sun.

Explanation

A farad (F) is the standard unit of capacitance (C) in the International System of Units (SI).

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The SI unit of energy/work is the joule (J)

Explanation

Gamma rays have the shortest wavelength and highest energy in the electromagnetic spectrum.

They are produced in nuclear reactions.

They are used in medical treatments and scientific research.

Explanation

Explanation

• The scientist who first discovered that the earth revolves around the sun was Copernicus.
• Earth's Rotational Theory:
  • Rotation can be defined as the spin of Earth on its own axis from west to east direction.
  • It must also be noted that the speed of rotation of the earth is not constant throughout latitudes.
    
  • It differs at different latitudes.

Explanation

A balloon is filled with a gas called helium.

while

A balloon filled with hydrogen gas moves in the upward direction

Explanation

Red light rays have the lowest frequency and highest wavelength value.

Blue or violet light has the shortest wavelength.

Explanation

The melting point of ice at normal atmospheric pressure is 0 °C (zero degrees Celsius).

Key Points:

• 0 K (zero Kelvin) is equivalent to -273.15 °C, which is absolute zero, the lowest possible temperature.
• 100 °C is the boiling point of water at normal atmospheric pressure.

Explanation

In the normal human eye, the image is formed On the retina, where light is focused and converted into electrical signals by photoreceptors.

This allows us to perceive and interpret visual information.

Explanation

The SI unit of magnetic flux is Weber (Wb)

The Weber is commonly expressed in Volt-seconds

And a flux density of one Wb/m2 (one Weber per square meter) is one Tesla (T)