NEET Physics: Questions 1835 - 1838 of 2099

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Question number: 1835

» Oscillations and Waves » Harmonics

MCQ▾

Question

A string on a musical instrument is 70 cm long and its fundamental frequency is 235 Hz. If the desired frequency of 950 Hz, is to be produced, the required length of the string is

Choices

Choice (4) Response
a.

22.7 cm

b.

12.3 cm

c.

17.3 cm

d.

16.5 cm

Question number: 1836

» Experimental Skills » Transistor

MCQ▾

Question

How are the currents flowing in the emitter, base and the collector related to each other?

Choices

Choice (4) Response
a.

Ie=Ib+Ic

b.

IC=Ib+Ie

c.

Ie=IcIb

d.

Ib=Ie+Ic

Question number: 1837

» Gravitation » Escape Velocity

MCQ▾

Question

A spaceship is launched into a circular orbit close to earth’s surface. What additional velocity has now to be imparted to the spaceship in the orbit to overcome the gravitational pull? (Radius of earth = 6400 km, g = 9.8 m/sec 2)

Choices

Choice (4) Response
a.

32.85 m/sec

b.

3.2805 km/sec

c.

7.32 m/sec

d.

11.32 km/sec

Question number: 1838

» Experimental Skills » Multimeter

MCQ▾

Question

To determine the equivalent resistance of two resistors when connected in series, a student arranged the circuit components as shown in the diagram. But he did not succeed to achieve the objective.

Circuit diagram for determine two resistors.

Circuit Diagram for Determine Two Resistors.

To determine the equivalent resistance of two resistors when connected in series, a student arranged given circuit.

Which of the following mistakes has been committed by him in setting up the circuit?

Choices

Choice (4) Response
a.

Terminals of voltmeter are wrongly connected

b.

Position of ammeter is incorrect

c.

Position of voltmeter is incorrect

d.

Terminals of ammeter are wrongly connected

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