NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 2132 - 2134 of 2142

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Question number: 2132

» Dual Nature of Matter and Radiation » Black-Body Radiation

Appeared in Year: 2017

MCQ▾

Question

A spherical black body with a radius of radiates power at . If the radius were halved and the temperature doubled, the power radiated in watt would be:

Choices

Choice (4) Response

a.

1800

b.

450

c.

225

d.

1000

Question number: 2133

» Laws of Motion » Equilibrium of Concurrent Forces

Appeared in Year: 2017

MCQ▾

Question

An arrangement of three parallel straight wires placed perpendicular to plane of paper carrying same current along the same direction is shown in figure. Magnitude of force per unit length on the middle wire is given by –

Three straight wires placed perpendicular

Three Straight Wires Placed Perpendicular

In figure three straight wires placed perpendicular to each other.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 2134

» Thermodynamics » Work in Thermodynamic Process and PV Diagrams

Appeared in Year: 2017

Match List-Ⅰ List-Ⅱ▾

Question

Thermodynamic processes are indicated in the following diagram: PV diagram for thermodynamic process In figure a PV diagram for thermodynamic process is shown. Match the following:
List-Ⅰ (Group I) List-Ⅱ (Group II)

(A)

(i)

Adiabatic

(B)

(ii)

Isobaric

(C)

(iii)

Isothermal

(D)

(iv)

Isochoric

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (ii)
  • (iv)
  • (i)
  • (iii)

b.

  • (i)
  • (ii)
  • (iv)
  • (iii)

c.

  • (iii)
  • (i)
  • (iv)
  • (ii)

d.

  • (ii)
  • (iv)
  • (iii)
  • (i)

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