NDA General Ability 21 April 2024 | Physics Question 277 | General Science

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NDA General Ability 21 April 2024

MCQ (Single Correct Answer)

-1.33

Which one of the following is primarily responsible for conduction of current in a metal?

Bound electrons

Free electrons

Both bound and free electrons

Ions

NDA General Ability 3 September 2023

MCQ (Single Correct Answer)

-1.33

The streaming of light beams coming from the Sun through trees is said to have suggested that light travels in straight line. The particles on the path of light beams are visible to us because

dust particles in the air reflect light into our eyes

dust particles in the air scatter light into our eyes

dust particles in the air refract light into our eyes

dust particles in the air polarize light into our eyes

NDA General Ability 3 September 2023

MCQ (Single Correct Answer)

-1.33

The flash of lightning is seen before the thunderstorm is heard. It verifies that

sound travels much faster than light

light travels much faster than sound

light and sound both travel with same speed

intensity of flash of lightning is very high during thunderstorm

NDA General Ability 3 September 2023

MCQ (Single Correct Answer)

-1.33

The potential difference between the two end terminals of an electric heater is 220 V and the current through it is 0.5 A. What would be the current through the heater if the potential difference across the terminals of the heater is reduced to 120 V?

1.0 A

0.5 A

0.27 A

0.7 A

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