NEET Physics: Questions 1796 - 1801 of 2099

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2099 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Passage

A physicist wishes to eject electrons by shining light on a metal surface. The light source emits light of wavelength of 450 nm. The table lists the only available metals and their work functions.

List of metals and their work function

In above table lists of available metals and their work function is given

Metal

W 0 (eV)

Barium

2.5

Lithium

2.3

Tantalum

4.2

Tungsten

4.5

Question number: 1796 (3 of 3 Based on Passage) Show Passage

» Dual Nature of Matter and Radiation » Einstein's Photoelectric Equation

MCQ▾

Question

Suppose photoelectric experiment is done separately with these metals with light of wavelength 450 nm. The maximum magnitude of stopping potential amongst all the metals is-

Choices

Choice (4) Response
a.

0.45 volt

b.

4.5 volt

c.

2.75 volt

d.

0.25 volt

Question number: 1797

» Oscillations and Waves » Doppler Effect in Sound

MCQ▾

Question

Doppler shift in frequency depends upon

Choices

Choice (4) Response
a.

The velocity of the observer

b.

The velocity of the source

c.

The frequency of the wave produced

d. All a. , b. and d. are correct

Question number: 1798

» Communication System » Amplitude and Frequency Modulation

MCQ▾

Question

If f a and f f represent the carrier wave frequencies for amplitude and frequency modulations respectively, then

Choices

Choice (4) Response
a.

faff

b.

fa=ff

c.

fa<ff

d.

fa>ff

Question number: 1799

» Gravitation » Kepler's Laws of Planetary Motion

MCQ▾

Question

The mean distance of mars from sun is 1.524 times the distance of the earth from the sun. The period of revolution of mars around sun will be

Choices

Choice (4) Response
a.

3.88 earth year

b.

4.88 earth year

c.

2.88 earth year

d.

1.88 earth year

Question number: 1800

» Gravitation » Energy

MCQ▾

Question

A projectile is fired vertically upward from the surface of earth with a velocity Kvems . where vems is the escape velocity and K < 1. Neglecting air resistance, the maximum height to which it will rise measured from the center of the earth is - (where R = radius of earth)

Choices

Choice (4) Response
a.

1K2R

b.

RK2

c.

K2R

d.

R1K2

Question number: 1801

» Experimental Skills » Focal Length

MCQ▾

Question

For a convex spherical mirror, the graph of (1v) verses (1u) is,

Choices

Choice (4) Response
a.
The graph of inverse of v Vs. inverse of u Choice -A

The Graph of Inverse of v vs. Inverse of U Choice -A

For a convex spherical mirror, the graph of v Vs. inverse of u is shown in figure.

b.
The graph of inverse of v vs. inverse of u Choice-B

The Graph of Inverse of v vs. Inverse of U Choice-B

For a convex spherical mirror, the graph of inverse of v vs. inverse of u is shown in figure.

c.
 The graph of inverse of v Vs. inverse of u Choice-C

the Graph of Inverse of v vs. Inverse of U Choice-C

For a convex spherical mirror, the graph of inverse of v Vs. inverse of u is shown in figure.

d.
 The graph of inverse of v Vs. inverse of u Choice-D

the Graph of Inverse of v vs. Inverse of U Choice-D

For a convex spherical mirror, the graph of inverse of v Vs. inverse of u is shown in figure.

Sign In