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1
JEE Main 2020 (Online) 5th September Evening Slot
Numerical
+4
-0
A prism of angle A = 1o has a refractive index $$\mu $$ = 1.5. A good estimate for the minimum angle of deviation (in degrees) is close to $${N \over {10}}$$.
Value of N is ____.
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2
JEE Main 2020 (Online) 5th September Morning Slot
Numerical
+4
-0
A beam of electrons of energy E scatters from a target having atomic spacing of 1 $$\mathop A\limits^o $$. The first maximum intensity occurs at $$\theta $$ = 60o. Then E (in eV) is ______.
(Planck constant h = 6.64 × 10–34 Js,
1 eV = 1.6 × 10–19 J, electron
mass m = 9.1 × 10–31 kg)
Your input ____
3
JEE Main 2020 (Online) 5th September Morning Slot
Numerical
+4
-0
A compound microscope consists of an objective lens of focal length 1 cm and an eyepiece of focal length 5 cm with a separation of 10 cm.
The distance between an object and the objective lens, at which the strain on the eye is minimum is $${n \over {40}}$$ cm. The value of n is _____.
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4
JEE Main 2020 (Online) 4th September Evening Slot
Numerical
+4
-0
Orange light of wavelength 6000 $$ \times $$ 10–10 m illuminates a single
slit of width 0.6 $$ \times $$ 10–4 m. The maximum possible number of diffraction minima produced on both sides of the central maximum is ___________.
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