1
MHT CET 2021 24th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A step up transformer operates on $$220 \mathrm{~V}$$ and supplies current of $$2 \mathrm{~A}$$. The ratio of primary and secondary windings is $$1: 20$$. The current in the primary is

A
5 A
B
2 A
C
40 A
D
20 A
2
MHT CET 2021 24th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The ratio of maximum to minimum wavelength in Balmer series of hydrogen atom is

A
36 : 5
B
3 : 4
C
9 : 5
D
5 : 9
3
MHT CET 2021 24th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The work done in blowing a soap bubble of volume '$$\mathrm{V}$$' is '$$\mathrm{W}$$'. The work required to blow a soap bubble of volume '$$2 \mathrm{~V}$$' is [$$\mathrm{T}=$$ surface tension of soap solution]

A
$$2^{2 / 3} \mathrm{~W}$$
B
$$2 \mathrm{~W}$$
C
$$\mathrm{W}$$
D
$$2^{1 / 3} \mathrm{~W}$$
4
MHT CET 2021 24th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

A current carrying loop is placed in a uniform magnetic field. The torque acting on the loop does not depend upon

A
area of loop
B
number of turns in the loop
C
shape of the loop
D
strength of the magnetic field
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