1
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

A Carnot engine has an efficiency of $\frac{1}{6}$. When the temperature of sink is reduced by 62 K , its efficiency is doubled. The temperature of the source is

A

$37^{\circ} \mathrm{C}$

B

$62^{\circ} \mathrm{C}$

C

$99^{\circ} \mathrm{C}$

D

$124^{\circ} \mathrm{C}$

2
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

A cell is balanced against 240 cm and 100 cm of potentiometer wire, respectively, when in open circuit and when short-circuited through a resistance of $5 \Omega$. The internal resistance of the cell is

A

$1.4 \Omega$

B

$2.4 \Omega$

C

$7 \Omega$

D

$9 \Omega$

3
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two bodies with kinetic energies in the ratio $3: 1$ are moving with equal linear momentum. The ratio of their masses is

A

$1: 1$

B

$1: 2$

C

$1: 3$

D

$1: 4$

4
MHT CET (PCB) 2025 9th April Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a circuit shown, if $10 \Omega$ resistor is replaced by $20 \Omega$, then the current drawn from the battery is

MHT CET (PCB) 2025 9th April Evening Shift Physics - Current Electricity Question 1 English
A

10 A

B

4 A

C

2 A

D

8 A