NDA 2019 Paper 2 | Physics Question 196 | General Science

NDA 2019 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Which of the following are the characteristics of electromagnetic waves ?

1. They are elastic waves.

2. They can also move in vacuum.

3. They have electric and magnetic components which are mutually perpendicular.

4. They move with a speed equal to 3 lakh meters per second.

Select the correct answer using the codes given below.

1, 2, 3 and 4

1, 2 and 4

2 and 3

3 and 4

NDA 2019 Paper 1

MCQ (Single Correct Answer)

+2.5

-0.83

The light energy escaping from the sun can be spread by

a shower of rain drops

a plane mirror

a convex lens

a combination of a convex lens and a concave lens

NDA 2019 Paper 1

MCQ (Single Correct Answer)

+2.5

-0.83

The correct sequence of energy transfer that occurs when an apple falls to the ground is

gravitational potential energy $$\to$$ heat energy to air $$\to$$ kinetic energy $$\to$$ heat energy to ground and apple $$\to$$ sound energy

gravitational potential energy $$\to$$ sound energy $$\to$$ kinetic energy $$\to$$heat energy to air $$\to$$ heat energy to ground and apple

gravitational potential energy $$\to$$ kinetic energy $$\to$$ heat energy to air $$\to$$ heat energy to ground and apple $$\to$$sound energy

gravitational potential energy $$\to$$kinetic energy $$\to$$ sound energy $$\to$$ heat energy to air $$\to$$ heat energy to ground and apple

NDA 2019 Paper 1

MCQ (Single Correct Answer)

+2.5

-0.83

Which one of the following mineral is used as a fuel in nuclear power stations?

Bauxite

Quartz

Feldspar

Pitchblende

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