Question

Q10 Draw energy band diagram for an intrinsic semiconductor at T >OK
For question numbers 11. 12. 13 and 14, two statements are given-one labeled
Assertion (A) and the other labeled Reason (R). Select the correct answer to these
questions from the codes (AL (B),(C) and (D) as given below.
(A) Both A and R are true and R is the correct explanation of A (B) Both A and Rare
true but R is NOT the correct explanation of A (C) A is true but R is false (D) Ais fake
and R is also false
Q11 Assertion: When an uncharged capacitor of capacitance is charged by a cell of emf
and energy supplied by the battery is cv?
1
V, the energy stored by capacitor is cra
Reason: In charging an uncharged capacitor, energy is lost in form of hest.
(AA
(BB
(C)
(D) D
1
Q12 Assertion: In a uniform electric field equipotential surface must be plane surface.
Reason: Electrons move from a region of lower potential to a region of higher potential
if electrons start from ret
(A) A (BB (C) С (DD
QL3 Assertion: A les has two principal focal lengths which may differ.
Reason: Light can fall on either surface of the lans. Two principal focal lengths differ
when medium on the two sides have differzi refractive indica.
(A) A (B)B (CC D D
Q14 Assertion: Image formed by concave lens is not always virtual
Reason: Image formed by a lens is real if the image is formed in the direction of the
ray of light with respect to the las
(A) A
(BB
(CC
(D) D​

Answer 1

Answer:a , c . d , a , b

Explanation: is is answer

Answer 2

Answer:

c d a b

Explanation:

given options verify the assertion