1
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In the network shown cell E has internal resistance $r$ and the galvanometer shows zero deflection. If the cell is replaced by a new cell of emf $2 E$ and internal resistance $3 r$ keeping everything else identical, then

MHT CET 2019 3rd May Morning Shift Physics - Current Electricity Question 2 English

A
The galvanometer will show deflection of 10 divisions.
B
The galvanometer show zero deflection,
C
Current will flow from $B$ to $A$.
D
Current will flow from $A$ to $B$.
2
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In hydrogen emission spectrum, for any series, the principal quantum number is $n$. Corresponding maximum wavelength $\lambda$ is ( $R=$ Rydberg's constant)

A
$\frac{R(2 n+1)}{n^2(n+1)}$
B
$\frac{n^2(n+1)^2}{R(2 n+1)}$
C
$\frac{n^2(n+1)}{R(2 n+1)}$
D
$\frac{R(2 n+1)}{n^2(n+1)^2}$
3
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

$\left[\mathrm{L}^2 \mathrm{M}^1 \mathrm{~T}^{-2}\right]$ are the dimensions of

A
torque
B
force
C
angular acceleration
D
angular momentum
4
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

For formation of beats, two sound notes must have

A
different amplitudes and different frequencies
B
exactly equal frequencies only
C
exactly equal amplitudes only
D
nearly equal frequencies and equal amplitudes
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