1
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

The driver of a car travelling with speed $$30 \mathrm{~ms}^{-1}$$ towards a hill sounds a horn of frequency $$600 \mathrm{~Hz}$$. If the velocity of sound in air is $$330 \mathrm{~ms}^{-1}$$, the frequency of reflected sound as heard by driver is :

A
$$550 \mathrm{~Hz}$$
B
$$555.5 \mathrm{~Hz}$$
C
$$720 \mathrm{~Hz}$$
D
$$500 \mathrm{~Hz}$$
2
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

An interference pattern is observed by Young’s double slit experiment. If now the separation between coherent source is halved and the distance of screen from coherent sources

A
becomes double
B
becomes one-fourth
C
remains same
D
becomes four times
3
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

Two capacitors $$C$$ and $$\frac{C}{2}$$ are connected to a battery of $$V$$ volts, as shown below

AIIMS 2017 Physics - Capacitor Question 3 English

The work done in charging both the capacitors fully is

A
$$2 C V^2$$
B
$$\frac{3}{4} C V^2$$
C
$$\frac{1}{2} C V^2$$
D
$$\frac{1}{4} C V^2$$
4
AIIMS 2017
MCQ (Single Correct Answer)
+1
-0.33

A series R-C circuit is connected to AC voltage source. Consider two cases; (A) When C is without a dielectric medium and (B) When C is filled with dielectric of constant 4. The current I$$_R$$ through the resistor and voltage V$$_C$$ across the capacitor are compared in two cases.

A
$$I_R^A> I_R^B$$
B
$$I_R^A< I_R^B$$
C
$$V_C^A< V_C^B$$
D
None of these
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