Represent the following numbers as intergers with appropriate signs.
A submarine is moving at a depth,eight hundred metre below the sea level.

Represent the following numbers as intergers with appropriate signs. An aeiroplane is flying at a height two thousand metre abovve te ground.

Represent the following numbers as intergers with appropriate signs. A deposit of rupees two hundred.

Represent the following numbers as intergers with appropriate signs. Withdrawal of rupees seven hundred.

The questions given below consist of an assertion and the reason. Use the following key to choose the appropriate answer. (a) Both the Assertion and the Reason are correct and the Reason is the correct explanation of the Assertion. (b) The Assertion and the Reason are correct but the Reason is not the correct explanation of the Assertion.(c) Assertion is is CORRECT but reason is INCORRECT. (d) If assertion is INCORRECT but reason is CORRECT. (e)If both assertion and reason are INCORRECT. Assertion: In CsCl structure, the coordination number of Cs^+ ion is 8. Reason: Cl^- ions in CsCl have body centred cubic arrangement.

The question given below consist of an assertion (A) and a reason ( R). Use the following key to choose the appropriate answer to these questions from the codes (a), (b), ( c) and (d) given below: (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is NOT the correct explanation of A. (c) A is true but R is false. (d) A is false and R is also false. Assertion: A charged particle moving at rigth angle to a uniform magnetic field does no work. Reason: Because the displacement of the particle is zero.