Total internal reflection is possible when light travels from
air to water
air to glass
water to glass
glass to water
The potential difference across a conductor of resistivity e is constant. The heat generated in the conductor is directly proportional to
e
e2
A body of mass 2 kg is moving on a smooth horizontal surface with an initial velocity of 10 ms-1 along the east. A uniform force of 10 N towards the north is applied to the body. The final velocity of the body after 2 s will be
ms-1 at 45° North of East
ms-1 at 45° South of East
20 ms-1 towards East
20 ms-1 towards West
Which of the following gives precipitate, with ammoniacal silver nitrate solution?
C2H6 (Ethane)
C2H4 (Ethylene)
C2H2 (Acetylene)
C3H6 (Propene)
C.
C2H2 (Acetylene)