A. 4.5 x 10-11s B. 4.5 x 10-10s C. 4 .5 x 10-12s D. 3.0 x 10-10s Correct Answer: Option…
A. periscope B. sextant C. episcope D. kaleidoscope Correct Answer: Option D = kaleidoscope
A. diffraction B. refraction C. reflection D. polarization Correct Answer: Option A = diffraction
A. Increase the reverberation of sound in the hall B. increase the amount of echo in the hall C. reduce…
I. They should be identical II. They should originate from the same source. III. They should be coherent. IV. They…
A. handle is a better conductor of heat than the blade B. handle contains stored energy in form of heat…
I. Mass II. Density III. Temperature IV. Nature of substance A. I and II only B. I, II and IV…
I. Increase the melting point of the liquid. II. Increase the boiling point of the liquid. III. Decrease the melting…
A. 30° B. 25° C. 15° D. 10° Correct Answer: Option D = 10° Explanation Electricity heat energy supplies by…
I. Use a liquid with a high melting point. II. use a liquid of high volume expansivity. III. use a…