NEET Physics: Questions 2061 - 2064 of 2098

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Question number: 2061

» Thermodynamics » Concept of Temperature

Appeared in Year: 2016

MCQ▾

Question

The temperature inside a refrigerator is t2 and the room temperature is t1 . The amount of heat deliver to the room for each joule of electrical energy consumed ideally will be –

Choices

Choice (4) Response

a.

t1t1t2

b.

t1+t2t1+273

c.

t2+273t1t2

d.

t1+273t1t2

Question number: 2062

» Oscillations and Waves » Simple Harmonic Motion » Oscillations of a Spring

Appeared in Year: 2016

MCQ▾

Question

A body of mass m is attached to the lower end of a spring whose upper end is fixed. The spring has negligible mass. When the mass m is slightly pilled down and released, it oscillates with a time period of 3s . When the mass m is increased by 1 kg, the time period of oscillation becomes 5s . The value of m in kg is:

Choices

Choice (4) Response

a.

43

b.

169

c.

916

d.

34

Question number: 2063

» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC

Appeared in Year: 2016

MCQ▾

Question

A 100Ω resistance and a capacitor is 100Ω reactance are connected in series across a 220V source. When the capacitor is 50% charged, the peak value of the displacement current is –

Choices

Choice (4) Response

a.

2.2A

b.

11A

c.

112A

d.

4.4A

Question number: 2064

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

Appeared in Year: 2016

MCQ▾

Question

The second overtone of an open organ pipe has the same frequency as the first overtone of a closed pipe L meter long. The length of the open pipe will be –

Choices

Choice (4) Response

a.

L

b.

L2

c.

2L

d.

4L

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