A. 70° B. 45° C. 25° D. 20° Correct Answer: Option D = 20° Explanation Whenever a ray of light…
A. conduction only B. convection only C. conduction and convection D. convection and radiation Correct Answer: Option C - conduction…
A. Velocity, magnetic flux and reaction B. Tension, magnetic flux and mass C. Displacement, impulse and power D. Work, pressure…
A. work output is always greater than the work input B. load lifted is always greater than the effort applied…
I. The earth is not spherical but elliptical in shape II. Variation in latitude and longitude III. Rotation of the…
A. 45° B. 0° C. 90° D. 180° Correct Answer: Option B = 0° Explanation The resultant of two forces…
A. 12cm B. 1cm C. 3cm D. 6cm Correct Answer: Option D - 6cm Explanation If the bob is fully…
A. its kinetic energy on the ground B. twice its initial potential energy C. its initial potential energy D. half…
A. Diffraction B. Refraction C. Dispersion D. Interference Correct Answer: Option D - Interference
A. Increase B. Decrease C. Be Constant D. Increase then decrease Correct Answer: Option C - Be Constant