1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

Three vessels of equal capacity have gases at the same temperature and pressure. The first vessel contains helium (monoatomic), the second contains fluorine (diatomic) and the third contains sulfur hexafluoride (polyatomic). The correct statement, among the following is :

A
The root mean square speed of sulfur hexafluoride is the largest
B
All vessels contain unequal number of respective molecules
C
The root mean square speed of molecules is same in all three cases
D
The root mean square speed of helium is the largest
2
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

An organ pipe filled with a gas at 27$$^\circ$$C resonates at 400 Hz in its fundamental mode. If it is filled with the same gas at 90$$^\circ$$C, the resonance frequency at the same mode will be

A
512 Hz
B
420 Hz
C
440 Hz
D
484 Hz
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus

The collector current in a common base amplifier using n-p-n transistor is 24 mA. If 80% of the electrons released by the emitter is accepted by the collector, then the base current is numerically :

A
3 mA and entering the base
B
6 mA and leaving the base
C
3 mA and leaving the base
D
6 mA and entering the base
4
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

The sliding contact C is at one fourth of the length of the potentiometer wire (AB) from A as shown in the circuit diagram. If the resistance of the wire AB is R0, then the potential drop (V) across the resistor R is

NEET 2022 Phase 2 Physics - Current Electricity Question 9 English

A
$${{2{V_0}R} \over {2{R_0} + 3R}}$$
B
$${{4{V_0}R} \over {3{R_0} + 16R}}$$
C
$${{4{V_0}R} \over {3{R_0} + R}}$$
D
$${{2{V_0}R} \over {4{R_0} + R}}$$
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