1
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A potentiometer wire of length 1 m is connected in series with $495 \Omega$ resistance and 2 V battery. If $0.2 \mathrm{mV} / \mathrm{cm}$ is the potential gradient, then the resistance of the potentiometer wire is

A
$8 \Omega$
B
$6 \Omega$
C
$7 \Omega$
D
$5 \Omega$
2
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A carnot engine, whose efficiency is $40 \%$ takes heat from a source maintained at temperature 600 K . It is desired to have an efficiency $60 \%$, then the intake temperature for the same exhaust (sink) temperature should be

A
1800 K
B
1200 K
C
900 K
D
600 K
3
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A person is observing a bacteria through a compound microscope. For better analysis and to improve the resolving power he should

A
increase the wavelength of light.
B
increase the refractive index of the medium between the object and objective lens.
C
decrease the focal length of the eye-piece.
D
decrease the diameter of the objective lens.
4
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two rods of same length \& material transfer a given amount of heat in 12 s when they are joined end to end. But when they are joined length wise parallel to each other they will transfer same amount of heat in same condition in time

A
24 s
B
3 s
C
1.5 s
D
48 s
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