A. The hair barging against the charged comb
B. The rubbing of the comb with the hair
C. Small electric sparks
D. None of the above
A. Galvanization
B. Vulcanization
C. Annealing
D. Electroplating
A. Steam can penetrate the skin
B. Steam is at a higher temperature
C. Steam is at a higher pressure
D. Steam contains more energy than boiling water
A. Evaporation of water produces lot of cooling
B. Water boils at a comparatively high temperature
C. Water is good conductor of heat
D. Water has very high specific heat capacity
A. Remain unaffected
B. Fall away from or towards the train depending upon the speed
C. Fall towards the train
D. Fall away from the train
A. The value of `gi is less in water
B. Of the viscous force in water
C. Density of air is less than that of water
D. Of the surface tension of water
A. Taceometer
B. Chronometer
C. Retinoscope
D. Spectrometer
A. Photodiode
B. Electroscope
C. Polaroid
D. Retinoscope