NDA General Ability 4 September 2022 | Physics Question 295 | General Science

NDA General Ability 4 September 2022

MCQ (Single Correct Answer)

-1.33

An object is made of two equal parts by volume; one part has density ρ₀, and the other part has density 2ρ₀. What is the average density of the object?

3ρ₀

$\rm \frac{3}{2}\rho_0$

ρ₀

$\rm \frac{1}{2}\rho_0$

NDA General Ability 4 September 2022

MCQ (Single Correct Answer)

-1.33

A pressure cooker cooks food faster by

increasing the boiling point of water

decreasing the boiling point of water

increasing the melting point of water

decreasing the melting point of water

NDA General Ability 4 September 2022

MCQ (Single Correct Answer)

-1.33

Which one of the following wavelengths corresponds to the wavelength of X-rays?

500 nm

5000 nm

100 nm

1 nm

NDA General Ability 4 September 2022

MCQ (Single Correct Answer)

-1.33

An electric bulb is connected to 220 V generator. The current drawn is 600 mA. What is the power of the bulb?

132 W

13.2 W

1320 W

13200 W

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