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PMT Sample Question Physics
PMT Sample Question Physics 01 Physics
1. The velocity with which a projectile must be fired so that it escapes earth's gravitation does not depend on

   (A) Mass of the earth

   (B) Mass of the projectile

   (C) Radius of the projectile's orbit

   (D) Gravitational constant

ans:B

 

2. The maximum distance upto which TV transmission from a TV tower of height h can be received

is proportional to-

 

   (A) h 1/2

   (B) h

   (C) h 3/2

   (D) h 2

ans:A

 

3. In short wave communication waves of which of the following frequencies will be reflected back

by the ionospheric layer having electron density 10 11 per m -3 ?

  (A) 2 MHz

  (B) 10 MHz

  (C) 12 MHz

  (D) 18 MHz