1
JEE Main 2021 (Online) 25th July Evening Shift
Numerical
+4
-1
A light beam of wavelength 500 nm is incident on a metal having work function of 1.25 eV, placed in a magnetic field of intensity B. The electrons emitted perpendicular to the magnetic field B, with maximum kinetic energy are bent into circular are of radius 30 cm. The value of B is ___________ $$\times$$ 10$$-$$7 T.
Given hc = 20 $$\times$$ 10$$-$$26 J-m, mass of electron = 9 $$\times$$ 10$$-$$31 kg
Given hc = 20 $$\times$$ 10$$-$$26 J-m, mass of electron = 9 $$\times$$ 10$$-$$31 kg
Your input ____
2
JEE Main 2021 (Online) 25th July Evening Shift
Numerical
+4
-1
A 16 $$\Omega$$ wire is bend to form a square loop. A 9V supply having internal resistance of 1$$\Omega$$ is connected across one of its sides. The potential drop across the diagonals of the square loop is _______________ $$\times$$ 10$$-$$1 V
Your input ____
3
JEE Main 2021 (Online) 25th July Evening Shift
Numerical
+4
-1
Two circuits are shown in the figure (a) & (b). At a frequency of ____________ rad/s the average power dissipated in one cycle will be same in both the circuits.
![JEE Main 2021 (Online) 25th July Evening Shift Physics - Alternating Current Question 96 English](https://imagex.cdn.examgoal.net/1kryzjscr/0e58ecca-b792-4882-8f94-f7db6bb04563/576cc1b0-f5f5-11eb-92d9-470658ec3090/file-1kryzjscs.jpg)
![JEE Main 2021 (Online) 25th July Evening Shift Physics - Alternating Current Question 96 English](https://imagex.cdn.examgoal.net/1kryzjscr/0e58ecca-b792-4882-8f94-f7db6bb04563/576cc1b0-f5f5-11eb-92d9-470658ec3090/file-1kryzjscs.jpg)
Your input ____
4
JEE Main 2021 (Online) 25th July Evening Shift
Numerical
+4
-1
From the given data, the amount of energy required to break the nucleus of aluminium $$_{13}^{27}$$Al is __________ x $$\times$$ 10$$-$$3 J.
Mass of neutron = 1.00866 u
Mass of proton = 1.00726 u
Mass of Aluminium nucleus = 27.18846 u
(Assume 1 u corresponds to x J of energy)
(Round off to the nearest integer)
Mass of neutron = 1.00866 u
Mass of proton = 1.00726 u
Mass of Aluminium nucleus = 27.18846 u
(Assume 1 u corresponds to x J of energy)
(Round off to the nearest integer)
Your input ____
Paper analysis
Total Questions
Chemistry
23
Mathematics
23
Physics
25
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