NDA 2017 Paper 2 | Physics Question 73 | General Science

General Science

Physics

Chemistry

Biology

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 2017 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Which one of the following statements about energy is correct?

Energy can be created as well as destroyed.

Energy can be created but not destroyed.

Energy can neither be created nor destroyed.

Energy cannot be created but can be destroyed.

Questions Asked from Marks 2.5