Question

Choose the correct answer from the options given below:

LIST I		LIST II
A	Planck's constant (h)	1	$\left[ M ^1 L ^2 T ^{-2}\right]$
B	Stopping potential (Vs)	2	$\left[ M ^1 L ^1 T ^{-1}\right]$
C	Work function $(ø) $	3	$\left[ M ^1 L ^2 T ^{-1}\right]$
D	Momentum (p)	4	$\left[ M ^1 L ^2 T ^{-3} A ^{-1}\right]$

• A. A-II, B-IV, C-III, D-I
• B. A-III, B-IV, C-I, D-II
• C. A-I, B-III, C-IV, D-II
• D. A-III, B-I, C-II, D-IV

Answer 1

Answer: (B)

(A) Planck's constant
$ h v= E $
$ h =\frac{ E }{v}=\frac{ M ^1 L ^2 T ^{-2}}{ T ^{-1}}= M ^1 L ^2 T ^{-1}$
(B) $E = qV$
$V=\frac{E}{q}=\frac{M^1 L^2 T^{-2}}{A^1 T^1}=M^1 L^2 T^{-3} A^{-1} \text { (IV) }$
(C) $\phi$ (work function $)=$ energy
$= M ^1 L ^2 T ^{-2}$...(I)
(D) Momentum (p) = F.t
$=M^1 L^1 T^{-2} T^1$...(II)
$=M^1 L^1 T^{-1}$