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The slits in a double-slit interference experiment are illuminated by orange light (λ=60nm). A thin transparent plastic of thickness t is placed in front of one of the slits. The number of fringes shifting on screen is plotted versus the refractive index μ of the plastic in graph shown in figure. The value of t is
15
Nov
The slits in a double-slit interference experiment are illuminated by orange light (λ=60nm). A thin transparent plastic of thickness t is placed in front of one of the slits. The number of fringes shifting on screen is plotted versus the refractive index μ of the plastic in graph shown in figure. The value of t [...]
Blue light of wavelength 480 nm is most strongly reflected off a thin film of oil on a glass slab when viewed near normal incidence. Assuming that the index of refraction of the oil is 1.2 and that of the glass is 1.6, what is the minimum thickness of the oil film (other then zero)?
15
Nov
Blue light of wavelength 480 nm is most strongly reflected off a thin film of oil on a glass slab when viewed near normal incidence. Assuming that the index of refraction of the oil is 1.2 and that of the glass is 1.6, what is the minimum thickness of the oil film (other then zero)? [...]
In Young’s double-slit experiment, the slits are illuminated by monochromatic light. The entire set-up is immersed in pure water. Which of the following act cannot restore the original fringe width?
15
Nov
In Young’s double-slit experiment, the slits are illuminated by monochromatic light. The entire set-up is immersed in pure water. Which of the following act cannot restore the original fringe width? In Young's double slit experiment the slits are illuminated by monochromatic light. The entire set-up is immersed in pure water. Which of the following act [...]
Light is incident at an angle ϕ with the normal to a plane containing two slits of separation d. Select the expression that correctly describes the positions of the interference maxima in terms of the incoming angle ϕ and outgoing angle θ
15
Nov
Light is incident at an angle ϕ with the normal to a plane containing two slits of separation d. Select the expression that correctly describes the positions of the interference maxima in terms of the incoming angle ϕ and outgoing angle θ A convex mirror of radius of curvature 1.6 m has an object placed [...]
The alkaline earth metals Ba, Sr, Ca and Mg may be arranged in the order of their decreasing first ionisation potential as (a) Mg, Ca, Sr, Ba,
15
Nov
The alkaline earth metals Ba, Sr, Ca and Mg may be arranged in the order of their decreasing first ionisation potential as (a) Mg, Ca, Sr, Ba, Ba Ca Ca and Mg may be arranged in the order of their decreasing first ionisation potential as (a) Mg Sr The alkaline earth metals Ba November 15, [...]
Bleaching powder is obtained by the interaction of chlorine and (a) Conc. solution of Ca(OH)2 (b) Dilute solution of Ca(OH)2 (c) Dry calcium oxide
15
Nov
Bleaching powder is obtained by the interaction of chlorine and (a) Conc. solution of Ca(OH)2 (b) Dilute solution of Ca(OH)2 (c) Dry calcium oxide Bleaching powder is obtained by the interaction of chlorine and (a) Conc. solution of Ca(OH)2 (b) Dilute solution of Ca(OH)2 (c) Dry calcium oxide November 15, 2020 Category: Uncategorised (JEE Advanced [...]
If resistance R1 in resistance box is 300 Ω then the balanced length is found to be 75.0 cm from end A. The diameter of unknown wire is 1 mm and length of the unknown wire is 31.4 cm. Find the specific resistance of the unknown wire
15
Nov
If resistance R1 in resistance box is 300 Ω then the balanced length is found to be 75.0 cm from end A. The diameter of unknown wire is 1 mm and length of the unknown wire is 31.4 cm. Find the specific resistance of the unknown wire The maximum current in a galvanometer can be [...]
Setting of plaster of paris is (a) Oxidation with atmospheric oxygen (b) Combination with atmospheric CO2 (c) Dehydration
15
Nov
Setting of plaster of paris is (a) Oxidation with atmospheric oxygen (b) Combination with atmospheric CO2 (c) Dehydration Setting of plaster of paris is (a) Oxidation with atmospheric oxygen (b) Combination with atmospheric CO2 (c) Dehydration November 15, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
An ammeter and a voltmeter are connected in series to a battery of emf E=6.0V. When a certain resistance is connected in parallel with the voltmeter, the readding of the voltmeter decreases two times, whereas the reading of the ammeter increases the same number of times. Find the voltmeter reading after the connection of the resistance.
15
Nov
An ammeter and a voltmeter are connected in series to a battery of emf E=6.0V. When a certain resistance is connected in parallel with the voltmeter, the readding of the voltmeter decreases two times, whereas the reading of the ammeter increases the same number of times. Find the voltmeter reading after the connection of the [...]
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An ammeter and a voltmeter are connected in series to a battery of emf E=6.0V. When a certain resistance is connected in parallel with the voltmeter ,
the readding of the voltmeter decreases two times ,
whereas the reading of the ammeter increases the same number of times. Find the voltmeter reading after the connection of the resistance. ,
In the circuit shown in figure the reading of ideal ammeter connected as shown is same with both switches open as with both closed. Then find the resistance R ( in ohm ).
15
Nov
In the circuit shown in figure the reading of ideal ammeter connected as shown is same with both switches open as with both closed. Then find the resistance R ( in ohm ). In the circuit shown in figure the reading of ideal ammeter connected as shown is same with both switches open as with [...]