• Infinite
• Varies
• Maximum
• Zero
• #### 2.  In SHM, graph of which of the following is a straight line?

• T.E. against displacement
• P.E. against displacement
• Acceleration against time
• Velocity against displacement

• 4 sec
• 1 sec
• 2 sec
• 8 sec

• 3427 sec
• 3727 sec
• 3927 sec
• 864 sec

• 10%
• 1%
• 21%
• 42%

• #### 7.  The bob of a simple pendulum is a spherical hollow ball filled with water. A plugged hall near the bottom of the oscillating bob gets suddenly unplugged. During observation, till water is coming out, the time -period of the oscillation would

• first decrease and then increase to the original value
• first increase and then decrease to the original value
• increase towards a saturation value
• remain unchanged

• 4 × 10-2 m
• 4 × 10-1 m
• 4 × 10 m
• 4 × 100 m

• 1/∏
• 2∏
• 4
• #### 10.  If a hole is bored along the diameter of the earth and a stone is dropped into the hole

• The stone reaches the centre of the earth and stops there
• The stone reaches the other side of the earth and stops there
• The stone executes simple harmonic motion about the centre of the earth
• The stone reaches the other side of the earth and escapes into space
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