TS EAMCET · Physics · Capacitance
Two beams of monochromatic light with intensities and interfere constructively to produce an intensity of . If one of the beams is shifted by an angle the intensity is reduced to . The magnitude of is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Given: Intensities of two beams of monochromatic light I1=64 mW and I2=4 mW. Applying the formula of resultant intensity, I=I1+I2+2I1I2cosθ. Putting the values from the question, 84=64+4+2×8×2×cosθ cosθ=12 θ=60°
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 van der Waals' equation for a gas is \[ \left(P+\frac{a}{V^2}\right)(V-b)=n R T \] where \(P, V, R, T\) and \(n\) represent the pressure, volume, universal gas constant, absolute temperature and number of moles of a gas, respectively. \(a\) and \(b\) are constants. The ratio \(\frac{b}{a}\) will have the following dimensional formula.TS EAMCET 2002 Medium
- A block is kept on a rough horizontal surface. The acceleration of the block increases from \(6 \mathrm{~ms}^{-2}\) to \(11 \mathrm{~ms}^{-2}\) when the horizontal force acting on it increases from 20 N to 30 N . The coefficient of kinetic friction between the block and the surface is (Acceleration due to gravity \(=10\) \(\mathrm{ms}^{-2}\) )TS EAMCET 2024 Easy
- The sphere \(A\) of mass \(m\) moving with a constant velocity hits another sphere \(B\) of mass \(2 m\) at rest. If the coefficient of restitution is 0.4 , the ratio of the velocities of the spheres \(A\) and \(B\) after collision isTS EAMCET 2024 Easy
- Consider an expression where are volume, pressure, time, and length respectively. The quantity has dimension is a dimensionless constant. The value of the integer is:TS EAMCET 2021 Medium
- Two trucks heading in opposite directions each with speed \(0.1 u\), approach each other. The speed of the sound is \(u\). The driver of first truck sounds his horn of frequency \(495 \mathrm{~Hz}\). Let \(v_1\) and \(v_2\) are the frequencies heard by the driver of second truck, when the trucks approach each other and when the trucks have passed each other. The magnitude of \(v_1-v_2\) isTS EAMCET 2020 Medium
- Consider a vessel filled with a liquid upto height The bottom of the vessel lies in the plane passing through the origin. The density of the liquid varies with -axis as . If and are the pressures at the bottom surface and top surface of the liquid, the magnitude of is :TS EAMCET 2018 Hard
More PYQs from TS EAMCET
- A particle of mass \(m \mathrm{~kg}\) moves along the \(X\)-axis with its velocity varying with the distance travelled as \(v=k x^\beta\), where \(k\) is a positive constant. The total work done by all the forces during displacement of the particle from \(x=0\) to \(x=d\) is close toTS EAMCET 2018 Medium
- Two charges are \(+10 \mu C\) and \(-10 \mu C\) are separated by \(10 \mathrm{~cm}\). The magnitude of force acting on another charge \(5 \mu \mathrm{C}\) placed at the midpoint of the line joining the two charges will be [Use \(\frac{1}{4 \pi \varepsilon_0}=9 \times 10^9\) in SI unit]TS EAMCET 2022 Easy
- A beam of white light is incident normally on a plane surface absorbing of the light and reflecting the rest. If the incident beam carries of power, the force exerted by it on the surface isTS EAMCET 2022 Easy
- A short bar magnet placed with its axis at \(30^{\circ}\) with an external field of \(800 \mathrm{G}\) experiences a torque of \(0.016 \mathrm{Nm}\). The magnetic moment of the bar magnet isTS EAMCET 2020 Medium
- The layer of the atmosphere which efficiently reflects high frequency waves particularly at night isTS EAMCET 2025 Easy
- A person moves \(30 \mathrm{~m}\) North and then \(20 \mathrm{~m}\) towards East and finally \(30 \sqrt{2} \mathrm{~m}\) in South-West direction. The displacement of the person from the origin will beTS EAMCET 2020 Easy