Time left 1 Light from the Sun reaches us in nearly 2 minutes 4 minutes 8 minutes 16 minutes 2 Stars appears to move from east to west because all stars move from east to west the earth rotates from west to east the earth rotates from east to west the background of the stars moves from west to east 3 Pa(Pascal) is the unit for thrust pressure frequency conductivity 4 Planets do not twinkle because they emit light of a constant intensity their distance from the earth does not change with time they are very far away from the earth resulting in decrease in intensity of light they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable 5 Metals are good conductors of electricity because they contain free electrons the atoms are lightly packed they have high melting point All of the above 6 Let a thin capillary tube be replaced with another tube of insufficient length then, we find water will overflow will not rise depressed change its meniscus 7 Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension? Pressure and Young's modules Planck's constant and Angular momentum Impulse and moment of force Force and rate of change of linear momentum 8 If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same velocity momentum acceleration kinetic energy
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