Class XI CBSE – Revision Questions MCQ – Semester 1

  1. What is the gravitational field strength of a planet when the weight of a 100 kg astronaut is 400 N?

a)      ¼ N kg-1   b) 9.8 N kg-1 c) 4 N kg-1  d) infinity

  1. The only natural satellite of the earth complete orbits in about

a)      24 days b) 27.3 days c) 30 days d) 365 1/4 days

  1. The satellite that revolves in a polar orbit is called

a) Natural Satellite b) Geostationary satellite   c) Polar read more

A body is dropped from a tower of height 96 m. Another body is thrown up from the ground after a second with a velocity of 40 m/s.When and where they will meet?

A body is dropped from a tower of height 96 m. Another body is thrown up from the ground after a second with a velocity of 40 m/s. When and where they will meet? SOUNDARYA asked  Answer: For the first body, u=0 m/s Let S=x (from top) x=0.5 gt2  &#...