Q. The reflector of a search light is a :
1) plane mirror
2) cylindrical mirror
3) concave mirror
4) convex mirror
Q. Momentum is measured as the product of :
1) Mass and inertia
2) Mass and velocity
3) Mass and acceleration
4) Mass and force
Q. Negative acceleration is in the opposite direction of :
1) velocity
2) force
3) momentum
4) distance
Q. When a number of resistors are connected in series in a circuit, the value of current :
1) decreases
2) becomes half
3) increases
4) remains the same
Q. A 4.0 kg object is moving horizontally with a speed of 5.0 m/s. To increase its speed to 10 m/s, the amount of net work required to be done on this object is :
1) 150 J
2) 100 J
3) 75 J
4) 50 J
Q. The focal length of a concave mirror with a radius of curvature of 20.0 cm is :
1) 20 cm
2) 2 cm
3) 15 cm
4) 10 cm
Q. Which of the following never occurs singly in nature?
1) Force
2) Velocity
3) Momentum
4) Inertia
Q. To convert temperature from Celsius to Kelvin scale, you must :
1) multiply the given temperature by 273
2) subtract 273 from the given temperature
3) add 273 to the given temperature
4) divide the given temperature by 273
Q. An object with a mass of 22 kg moving with a velocity of 5 m/s possesses a kinetic energy of :
1) 2750 J
2) 1100 J
3) 275 J
4) 110 J
Q. The optical phenomenon that is responsible for the propagation of light signal through an optical fibre is -
1) Interference
2) Scattering
3) Total internal reflection
4) Refraction
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