1
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In a meter bridge experiment null point is obtained at $$l \mathrm{~cm}$$ from the left end. If the meter bridge wire is replaced by a wire of same material but twice the area of across-section, then the null point is obtained at a distance

A
$$2 l \mathrm{~cm}$$ from left end.
B
$$l \mathrm{~cm}$$ from left end.
C
$$ l / 2 \mathrm{~cm}$$ from left end.
D
$$ l / 4 \mathrm{~cm}$$ from left end.
2
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A long straight wire carrying a current of $$25 \mathrm{~A}$$ rests on the table. Another wire PQ of length $$1 \mathrm{~m}$$ and mass $$2.5 \mathrm{~g}$$ carries the same current but in the opposite direction. The wire PQ is free to slide up and down. To what height will wire PQ rise? ($$\mu_0=4 \pi \times 10^{-7}$$ SI unit)

MHT CET 2023 9th May Morning Shift Physics - Moving Charges and Magnetism Question 107 English

A
3 mm
B
4 mm
C
5 mm
D
8 mm
3
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In a thermodynamic process, there is no exchange of heat between the system and surroundings. Then the thermodynamic process is

A
isothermal
B
isobaric
C
isochoric
D
adiabatic
4
MHT CET 2023 9th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

According to kinetic theory of gases, which one of the following statements is wrong?

A
All the molecules of a gas are identical.
B
Collisions between the molecules of a gas and that of the molecules with the walls of the container are perfectly elastic.
C
The molecules do not exert appreciable force on one another except during collision.
D
The pressure exerted by a gas is due to the collision between the molecules of the gas.
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