Some questions (Assertion-Reason Type) are given below. Each question contains Statement I (Assertion) and statement II(reason). Each question has 4 choices (a),(b),(c ) and (d) out of which only one is correct. So select the correct choise.
a. Statement I is True, Statement II is True,Statement II is a correct explanation for Statement I
b. Statement I is True, Statement II is True, Statement II is NOT a correct ecplanation for Statement I
c. Statement I is True, Statement II is False .
d. Statement I is false, Statement II is True.
2. Statement:I Though light of a single frequency (monochromatic light) is incident on a metal, the energies of emitted photoelectrons are different.
Statement II: The energy of electrons just after they absorb photons incident on the metal surface may be lost in collision with other atoms in the metal before the electron is ejected out of the metal.

Options

A. Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1.
B. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1.
C. Statement-1 is True, Statement-2 is False.
D. Statement-1 is False, Statement-2 is True.

Answer

D

Explanation

The buoyant force acts at the centre of buoyancy of the body i.e., at the centre of mass of the fluid displaced.