NDA 2017 Paper 2 | Physics Question 72 | General Science

NDA 2017 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Water boils at a lower temperature at high altitudes, because

the air pressure is less

outside temperature is less

latent heat is less

None of the above

NDA 2017 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Concave mirror is used in headlights of vehicles, because it

focuses light from the bulb onto nearly vehicles

sends parallel rays

fits well into the shape of the headlight

is cheaper than other mirrors

NDA 2017 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

If some object is weighed when submerged in water, then what will happen to its weight compared to its weight in air?

Increases

Decreases

Remains exactly the same

Increases or decreases cannot be predicted

Greater than 20 kHz

NDA 2017 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Which one of the following statements about a satellite orbiting around the earth is correct?

Satellite is kept in orbit by remote control from ground station.

Satellite is kept in orbit by retro-rocket and solar energy keeps it moving around the earth.

Satellite requires energy from solar panels and solid fuels for orbiting.

Satellite does not required any energy for orbiting.

NDA Subjects

English

General Science

General Studies