NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 2107 - 2109 of 2184

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Question number: 2107

» Laws of Motion » Force and Inertia

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MCQ▾

Question

Two blocks and of masses and respectively are connected by a massless and inextensible string. The whole system is suspended by a massless spring as shown in figure. The magnitudes of acceleration of and immediately after the string is cut, are respectively,

Two blocks hanged on a spring

Two Blocks Hanged on a Spring

In figure two blocks of masses 3m and m, respectively, are hanged on a spring.

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Choice (4) Response

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b.

c.

d.

Question number: 2108

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

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Appeared in Year: 2017

MCQ▾

Question

A long solenoid of diameter has turn per meter. At the centre of the solenoid, a coil of turns and radius is placed with its axis coinciding with the solenoid axis. The current in the solenoid reduces at a constant rate to from in . If the resistance of the coil is the total charge flowing through the coil during this time is –

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Choice (4) Response

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b.

c.

d.

Question number: 2109

» Oscillations and Waves » Doppler Effect in Sound

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Appeared in Year: 2017

MCQ▾

Question

Two cars moving in opposite directions approach each other with speed of and respectively. The driver of the first car blows a horn having a frequency . The frequency heard by the driver of the second car is [velocity of sound ]:

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Choice (4) Response

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b.

c.

d.