Which of the following computing technology does not represent data as bite?

• Artificial intelligence
• Cloud computing
• Quantum computing
• Virtual reality

When an iron nail gets rusted, iron oxide is formed.

• without any change in the weight of the nail.
• with decrease in the weight of the nail.
• with increase in the weight of the nail.
• without any change in colour or weight of the nail.

An endoscope is used by a physician to view the internal parts of a body organ. It is based on the principle of:

• refraction of light
• re?ection of light
• total internal re?ection of light
• dispersion of light

A piece of ice is ?oating in a beaker containing water. When whole of the ice melts:

• the level of water will come down.
• the level of water will come up.
• the level of water will first rise and then fall.
• the level of water will remain the same.

A man inside a moving train tosses a coin, the coin falls behind him. The train is moving:

• forward with a uniform speed
• backward with a uniform speed
• forward with deceleration
• forward with acceleration

A fan produces a feeling of comfort during hot weather because:

• fan supplies cool air
• our body radiates more heat in air
• conductivity of air increases
• our perspiration evaporates rapidly

Rainbow is formed due to a combination of:

• refraction and absorption
• dispersion and diffraction
• refraction and scattering
• dispersion and total internal re?ection

What does the term Dolby B or Dolby C printed on tape recorders and other sound systems refer to?

• frequency modulated system
• amplitude modulated system
• noise reduction circuit
• both DC and AC power can be used

When a ship ?oats on water:

• it displaces no water
• the mass of water displaced is equal to the mass of the ship
• the mass of water displaced is lesser than the mass of the ship
• the mass of water displaced is greater than the mass of the ship

A car is moving on a road and rain is falling vertically. Select the correct answer:

• The rain will strike the wind screen only
• The rain will strike the front screen only
• The rain will strike both the screens
• The rain will not strike any of the screens