# NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1832 - 1837 of 2320

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## Question number: 1832

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MCQ▾

### Question

The loudness and the pitch of a sound depends on

### Choices

Choice (4)Response

a.

Intensity and frequency

b.

Frequency and number of harmonics

c.

Intensity and velocity

d.

Frequency and velocity

## Passage

It can be assumed that orbits of earth and mars are nearly circular around the sun. It is proposed to launch an artificial planet around the sun such that its apogee is at the orbit of mars while its perigee is at the orbit of earth. Let T e and T m be periods of revolution of earth and mars. Further the variables are assigned the meanings as follows.

M e → Mass of earth

M m → Mass of mars

L e → Angular momentum of earth around the sun

L m → Angular momentum of mars around the sun

R e → Semi major axis of earth’s orbit.

R m → Semi major axis of mars orbit.

M → Mass of the artificial planet

E e → Total energy of earth

E m → Total energy of mars.

## Question number: 1833 (1 of 2 Based on Passage) Show Passage

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MCQ▾

### Question

Time period of revolution of the artificial planet about sun will be (neglect gravitational effects of earth and mars)

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 1834 (2 of 2 Based on Passage) Show Passage

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MCQ▾

### Question

Areal velocity of the artificial planet around the sun will be,

### Choices

Choice (4)Response

a.

more than that of mars

b.

same as that of the earth

c.

less than that of earth

d.

more than that of earth

## Question number: 1835

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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.

17.3 cm

b.

12.3 cm

c.

16.5 cm

d.

22.7 cm

## Question number: 1836

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MCQ▾

### Question

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

### Choices

Choice (4)Response

a.

b.

c.

d.

## Question number: 1837

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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.

7.32 m/sec

b.

32.85 m/sec

c.

3.2805 km/sec

d.

11.32 km/sec

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