The least distance of distinct vision for a normal eye is_______________?
The least distance of distinct vision for a normal eye is_______________?
A. 15 cm
B. 25 cm
C. 30 cm
D. 40 cm
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In monochromatic red light a blue book will probably appear to be_________________?
In monochromatic red light a blue book will probably appear to be_________________?A. black
B. purple
C. green
D. no scientific reasoning availableA chimney works best if air exposed to the chimney is______________?
A chimney works best if air exposed to the chimney is______________?A. Stationary
B. Moving
C. Moving slowly
D. Moving fastThe blood flow is _______________ flow at systolic pressure?
The blood flow is _______________ flow at systolic pressure?A. Laminar
B. Turbulent
C. Mixed
D. NoneWhen two identical traveling waves are superimposed, the velocity of the resultant wave__________________?
When two identical traveling waves are superimposed, the velocity of the resultant wave__________________?A. decreases
B. increases
C. remains unchanged
D. becomes zeroIn a clinical thermometer the mercury in the capillary tube does not contract once removed from the patient because_______________?
In a clinical thermometer the mercury in the capillary tube does not contract once removed from the patient because_______________?A. Mercury takes a long time to contract
B. The amount of mercury use is very small
C. The capillary tube has a small constriction near the bulb
D. The capillary tube is very narrowWhich one of the following has the largest energy content ?
Which one of the following has the largest energy content ?A. 103 photons of wavelength 2 pm (γ-rays)
B. 102 photons of wavelength 1nm (x-rays)
C. 106 photons of wavelength 50?m (infrared)
D. 106 photons of wavelength 200nm (UV)