1
JEE Main 2024 (Online) 8th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

If $$M_0$$ is the mass of isotope $${ }_5^{12} B, M_p$$ and $$M_n$$ are the masses of proton and neutron, then nuclear binding energy of isotope is:

A
$$(5 M_p+7 M_n-M_o) C^2$$
B
$$(M_o-5 M_p-7 M_n) C^2$$
C
$$(M_o-5 M_p) C^2$$
D
$$(M_0-12 M_n) C^2$$
2
JEE Main 2024 (Online) 8th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

In a hypothetical fission reaction

$${ }_{92} X^{236} \rightarrow{ }_{56} \mathrm{Y}^{141}+{ }_{36} Z^{92}+3 R$$

The identity of emitted particles (R) is :

A
Proton
B
Neutron
C
Electron
D
$$\gamma$$-radiations
3
JEE Main 2024 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1

Binding energy of a certain nucleus is $$18 \times 10^8 \mathrm{~J}$$. How much is the difference between total mass of all the nucleons and nuclear mass of the given nucleus:

A
20 $$\mu$$g
B
2 $$\mu$$g
C
10 $$\mu$$g
D
0.2 $$\mu$$g
4
JEE Main 2024 (Online) 6th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

The longest wavelength associated with Paschen series is : (Given $$\mathrm{R}_{\mathrm{H}}=1.097 \times 10^7 \mathrm{SI}$$ unit)

A
$$2.973 \times 10^{-6} \mathrm{~m}$$
B
$$1.876 \times 10^{-6} \mathrm{~m}$$
C
$$1.094 \times 10^{-6} \mathrm{~m}$$
D
$$3.646 \times 10^{-6} \mathrm{~m}$$
JEE Main Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
CBSE
Class 12