NDA · General Ability Test — General Knowledge
Mechanics, heat, light, sound, electricity, magnetism and applications.
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Q1 · Physics (~25%) · EASY
A body of mass 5 kg is moving with a velocity of 10 m/s. What is its kinetic energy?
Q2 · Physics (~25%) · MEDIUM
A convex lens of focal length 20 cm forms an image of an object placed 30 cm from the lens. What is the image distance?
Q3 · Physics (~25%) · EASY
An electric heater of resistance 20 ohms is connected to a 220 V supply. How much current does it draw?
Q4 · Physics (~25%) · MEDIUM
A sound wave travels through air at 340 m/s. If its frequency is 170 Hz, what is its wavelength?
Q5 · Physics (~25%) · MEDIUM
Two forces of magnitudes 3 N and 4 N act perpendicular to each other on a body. What is the magnitude of their resultant force?