NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 1878 - 1882 of 2142

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 1878

» Oscillations and Waves » Doppler Effect in Sound

MCQ▾

Question

The speed of sound in air at a given temperature is 250 m/s. An engine blows whistle at a frequency of 810 cps. It is approaching the observer with velocity 25 m/s. The apparent frequency in cps heard by the observer will be

Choices

Choice (4) Response

a.

1100

b.

800

c.

900

d.

1000

Question number: 1879

» Gravitation » Orbital Velocity of a Satellite

MCQ▾

Question

A satellite is revolving in an orbit close to the earth’s surface. Taking the radius of the earth as 5.8 ⨯ 10 6 meter, the value of the orbital speed and the period of revolution of the satellite will respectively be (g = 9.8 meter/sec 2)

Choices

Choice (4) Response

a.

7.5 km/sec, 8.0 minutes

b.

2.7 km/sec, 8.51 minutes

c.

7.75 km/sec, 80.51 minutes

d.

7.5 km/sec, 80.51 minutes

Question number: 1880

» Experimental Skills » Galvanometer

MCQ▾

Question

A current of 5.5 A produces a deflection of 45° in the galvanometer. The figure of merit is

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1881

» Gravitation » Orbital Velocity of a Satellite

MCQ▾

Question

A satellite has to revolve round the earth in a circular orbit of radius 6 ⨯ 10 3 km. The velocity of projection of the satellite in this orbit will be -

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 1882

» Experimental Skills » Transistor

MCQ▾

Question

The transfer characteristics of a transistor means a plot of

Choices

Choice (4) Response

a.

input current versus output current.

b.

output voltage versus input voltage

c.

input voltage versus input current

d.

output voltage versus output current.

f Page
Sign In