AEEE - Physics Mock Tests

A car of mass 1000 kg moving with a velocity of 20 m/s is brought to rest by applying brakes over a distance of 50 m. The average braking force is:

A convex lens of focal length f is placed in contact with a concave lens of focal length 2f. The combined focal length is:

Two waves are described by y₁ = 3 sin(100πt) and y₂ = 4 sin(100πt + π/2). The amplitude of the resultant wave is:

Two rain drops of radii r and 2r are falling through air with terminal velocities v1 and v2 respectively. According to Stokes' law, the ratio v1/v2 is:

In a single-slit diffraction experiment, the width of the central maximum is:

In an LCR series circuit, L = 100 mH, C = 100 μF, and R = 100 Ω. The impedance of the circuit at resonance is:

A Carnot engine has an efficiency of 40% when the sink temperature is 300 K. The source temperature must be:

In a Young's double slit experiment, the fringe width is 0.8 mm. If the entire apparatus is immersed in water (μ = 4/3), the new fringe width is: