NEET Physics: Questions 1173 - 1176 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: 1173

» Wave Optics » Interference

MCQ▾

Question

The equation of two light waves are Equation , Equation . The ratio of maximum to minimum intensities produced by the superposition of these waves will be

Choices

Choice (4) Response

a.

1: 7

b.

49: 1

c.

7: 1

d.

1: 49

Question number: 1174

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

MCQ▾

Question

An electromagnetic radiation of frequency 3 × 10 15 cycles per second falls on a photo electric surface whose work function is 4.0 eV Find out the maximum velocity of the photo electrons emitted by the surface-

Choices

Choice (4) Response

a.

1.73 × 10 6 m/s

b.

13.4 × 10 -19 m/s

c.

19.8 × 10 -19 m/s

d.

Question does not provide sufficient data or is vague

Question number: 1175

» Dual Nature of Matter and Radiation » De-Broglie Relation

MCQ▾

Question

A radio station is transmitting waves of wavelength 300 m. If diffracting power of transmitter is 10 kW, then numbers of photons diffracted per second is-

Choices

Choice (4) Response

a.

1.5 × 10 35

b.

1.5 × 10 33

c.

1.5 × 10 31

d.

1.5 × 10 29

Question number: 1176

» Properties of Solids & Liquids » Heat Transfer » Radiation

MCQ▾

Question

f between wavelength λ and λ + dλ, e λ and a λ be the emissive and absorptive powers of a body and E λ be the emissive power of a perfectly black body, then according to Kirchhoff’s law, which is true

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

f Page
Sign In