WBJEE · Physics · Thermal Properties of Matter
If the temperature of the Sun gets doubled, the rate of energy received on the Earth will increase by a factor of
- A 2
- B 4
- C 8
- D 16
Answer & Solution
Correct Answer
(D) 16
Step-by-step Solution
Detailed explanation
Suppose temperature of \(\mathrm{Sun}=T\) When it is doubled, \(T^{\prime}=2 T\) From law of radiation (Stefan's law) \[ E \propto T^{4}=\sigma T^{4} \] \(\sigma=\) Stefan's constant.…
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 displacement of a plane progressive wave in a medium, travelling towards positive \(x\)-axis with velocity \(4 \mathrm{~m} / \mathrm{s}\) at \(t=0\) is given by \(y=3 \sin 2 \pi\left(-\frac{x}{3}\right)\). Then the expression for the displacement at a later time \(t=4\) sec will beWBJEE 2023 Easy
- Two solid spheres of same metal but of mass \(\mathrm{M}\) and \(8 \mathrm{M}\) fall simultaneously on a viscous liquid and their terminal velocities are \(v\) and \(n v\) then value of \(n\) isWBJEE 2010 Medium
- A common emitter transistor amplifier is connected with a load resistance of \(6 \mathrm{k} \Omega\). When a small a.c. signal of 15 \(\mathrm{mV}\) is added to the base emitter voltage, the alternating base current is \(20 \mu \mathrm{A}\) and the alternating collector current is \(1.8 \mathrm{~mA}\). What is the voltage gain of the amplifier?WBJEE 2020 Medium
- A planet moves around the sun in an elliptical orbit with the sun at one of its foci. The physical quantity associated with the motion of the planet that remains constant with time isWBJEE 2013 Medium
- Let \(\overline{\mathrm{V}}, \mathrm{V}_{\mathrm{rms}}, \mathrm{V}_{\mathrm{p}}\) denotes the mean speed, root mean square speed and most probable speed of the molecules each of mass \(m\) in an ideal monoatomic gas at absolute temperature T Kelvin. Which statement(s) is/are correct?WBJEE 2025 Medium
-
A parallel beam of light is incident on a glass prism in the shape of a quarter cylinder of radius \(R=0.05 \mathrm{m}\) and refractive index \(n=1.5,\) placed on a horizontal table as shown in the figure. Beyond the cylinder, a patch of light is found whose the nearest distance \(x\) from the cylinder isWBJEE 2017 Medium
More PYQs from WBJEE
-
Consider a circuit where a cell of emf \(\mathrm{E}_0\) and internal resistance \(r\) is connected across the terminal \(A\) and \(B\) as shown in figure. The value of \(R\) for which the power generated in the circuit is maximum, is given byWBJEE 2024 Medium - The line parallel to the \(x\)-axis passing through the intersection of the lines \(a x+2 b y+3 b=0\) and \(b x-2 a y-3 a=\) where \((a, b) \neq(0,0)\) isWBJEE 2025 Medium
- The correct order of decreasing acidity of nitrophenols will beWBJEE 2011 Easy
- Consider a quadratic equation \(a x^2+2 b x+c=0\) where \(a, b, c\) are positive real numbers. If the equation has no real root, then which of the following is true?WBJEE 2023 Hard
- \[
\begin{aligned}
&\text { The decreasing order of basic character of }\\
&\mathrm{K}_{2} \mathrm{O}, \mathrm{BaO}, \mathrm{CaO} \text { and } \mathrm{MgO} \text { is }
\end{aligned}
\]WBJEE 2015 Easy - Let \(P\) be a point on the ellipse \(\frac{x^{2}}{9}+\frac{y^{2}}{4}=1\) and the line through \(P\) parallel to the \(Y\) -axis mects the circle \(x^{2}+y^{2}=9\) at \(Q\) where \(P, Q\) are on the same side of the \(X\) -axis. If \(R\) is a point on \(P Q\) such that \(\frac{P R}{R Q}=\frac{1}{2},\) then the locus of \(R\) isWBJEE 2018 Medium