In each of the following question, a statement is given and a corresponding statement or reason is given just below it. In the statement, mark the correct answer as
Assertion `(A)` :For a fixed incident photon energy, photoelectrons have a wide range of energies ranging from zero to the maximum value `K_(max)`
Reason `(R)` : Intially the electrons in the metal are at different energy level.

In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it of the statements mark the correct answer as Assertion(A):Powerhouse of a cell is mitochondria Reason:ATP is produced in mitochondria

In each of the following questions, a statement is given and a corresponding statement or reason is given just below it. In the statements, mark the correct answer as A proton and electron both have energy 50 Ev . Statement-I:Both have different wavelengths Statement -II: Wavelength depends on energy and not on mass.

In each of the following questions a statement of Assertion is given followed by a corresponding statement of Reason just below it of the statements mark the correct answer as Assertion(A): Cell wall is not found in plant cell Reason:Animal cells are covered by cell wall

Direction : In each of the following questions , a statement of Assertion is given and a corresponding statement of Reason is given just below it .Of the four statements ,given below,mark one as the correct answer . Assertion : Algae are heterotrophic. Reason : They don't have chlorophyll.

In each of the following questions, a statement is given and a corresponding statement or reason is given just below it. In the statement, mark the correct answer as Statement-I: Though light of a single frequency (monochromic light) is incident ona 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.

Direction : In each of the following questions , a statement of Assertion is given and a corresponding statement of Reason is given just below it .Of the four statements ,given below,mark one as the correct answer . AssertioN: Fungi are heterotrophic in nutrition. Reason : They lack chlorophyll..