A falling drop of rain water acquires the spherical shape due to
1). Viscosity
2). Surface Tension
3). Atmospheric pressure
4). Gravitational force
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1. The pitch of sound depends on its
2. What is the reason for twinkling of stars ?
3. A gas behaves as an ideal gas more closely at
4. Vehicle tyres are inflated properly
6. When some detergent is added to water, the surface tension:
8. When a vibrating tuning fork is placed on a table a loud sound is heard. This is due to :
9. The sounds having frequency of 20?Hz to 20, 000 Hz are
10. The different colours of different stars are due to the variation of