TS EAMCET · Physics · Thermal Properties of Matter
The surface of a black body is at a temperature \(727^{\circ} \mathrm{C}\) and its cross-section is \(1 \mathrm{~m}^2\). Heat radiated from this surface in one minute in joules is (Stefan's constant \(=5.7 \times 10^{-8} \mathrm{~W} / \mathrm{m}^2 / \mathrm{k}^4\) )
- A \(34.2 \times 10^5\)
- B \(2.5 \times 10^5\)
- C \(3.42 \times 10^5\)
- D \(2.5 \times 10^6\)
Answer & Solution
Correct Answer
(A) \(34.2 \times 10^5\)
Step-by-step Solution
Detailed explanation
Given, Temperature of black body \((T)=727^{\circ} \mathrm{C}\) \[ =727+273=1000 \mathrm{~K} \] Cross-sectional area of black body \((A)=1 \mathrm{~m}^2\) Stefan's constant \((\sigma)=5.7 \times 10^{-8} \mathrm{~W} / \mathrm{m}^2 / \mathrm{K}^4\) We know that, Heat radiated per…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- The ratio of the displacements of a freely falling body during first, second and third seconds of its motion isTS EAMCET 2023 Medium
- Two particles \(A\) and \(B\) of masses ' \(m\) ' and ' \(2 m\) ' are suspended from massless springs of force constants \(K_1\) and \(K_2\). During their oscillation, if their maximum velocities are equal, then the ratio of amplitudes of \(A\) and \(B\) isTS EAMCET 2013 Easy
- A straight metal rod of length 6 cm is placed along the principal axis of a concave mirror of focal length 9 cm such that the end of the rod closer to the mirror is at a distance of 15 cm from the pole of the mirror. The length of the image of the rod isTS EAMCET 2025 Medium
- A uniform sphere of radius \(R\) and mass \(m\) is placed on an inclined plane which makes an angle \(45^{\circ}\) to the horizontal. For which of the following value of coefficient of friction, the sphere rolls without slipping. Select incorrect option.TS EAMCET 2019 Medium
- A Young's double slit experiment apparatus has slits separated by and a screen away from the slits. The whole apparatus is immersed in a liquid medium of refractive index and the slits are illuminated with green light ( in vacuum). Find the fringe width of the pattern formed on the screen.TS EAMCET 2022 Hard
- The mass number and the volume of a nucleus is and respectively. If the mass number is increased to then the volume is changed toTS EAMCET 2021 Medium
More PYQs from TS EAMCET
- The ratio of the centripetal accelerations of the electron in two successive orbits of hydrogen is \(81: 16\). Due to a transition between these two states, the angular momentum of the electron changes by ( \(h\) - Planck's constant)TS EAMCET 2024 Medium
- At time \(t=0\), a particle leaves the origin and moves in the positive direction of the \(X\)-axis. If the velocity of the particles varies as \(\mathbf{v}(t)=\mathbf{v}_0\left(1-\frac{t}{t_0}\right),\left|\mathbf{v}_0\right|=10 \mathrm{~m} / \mathrm{s}\) and \(t_0=10 \mathrm{~s}\), then the distance covered by the particle during the first \(20 \mathrm{~s}\) isTS EAMCET 2021 Hard
- In Huygen's eyepieceTS EAMCET 2007 Easy
- Magnetic field induction at the centre of a circular coil of radius \(5 \mathrm{~cm}\) and carrying a current \(0.9 \mathrm{~A}\) is (in SI units) \(\left(\varepsilon_0=\right.\) absolute permittivity of air in SI units, velocity of light \(=3 \times 10^8 \mathrm{~ms}^{-1}\) )TS EAMCET 2005 Medium
- The following figure shows a Carnot engine that works between temperatures and and drives a Carnot refrigeration that works between temperatures and The quantity will be
TS EAMCET 2021 Hard - When unpolarised light from air incidents on the surface of a medium of refractive index \(\sqrt{3}\), then the reflected light is totally polarised. The angle of refraction isTS EAMCET 2025 Medium