1
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
If the binding energy per nucleon in $3 \mathrm{Li}^7$ and ${ }_2 \mathrm{He}^4$ nuclei are respectively 5.60 MeV and 7.06 MeV , then energy of $p$ in the reaction $p+{ }_3 \mathrm{Li}^7 \rightarrow 2{ }_2 \mathrm{He}^4$ is
A
12.28 MeV
B
13.28 MeV
C
28.28 MeV
D
17.28 MeV
2
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
From a circular disc of radius 2 R , a smaller circular disc is cut with radius of the larger disc as its diameter. The centre of the hole is at a distance of $R$ from the centre of the original disc. The distance of the centre of mass of the remaining portion from the centre is:
A
$\frac{R}{3}$
B
$\frac{R}{4}$
C
$\frac{R}{6}$
D
$\frac{R}{2}$
3
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
The ratio of specific heat capacities at constant pressure to that at constant volume for a given mass of a gas is $\frac{5}{2}$. If the percentage increase in volume of the gas while undergoing an adiabatic change is $\frac{3}{2}$, then the percentage decrease in pressure will be:
A
$\frac{15}{4}$
B
$\frac{3}{5}$
C
$\frac{4}{15}$
D
$\frac{5}{3}$
4
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
A planet is 121 times heavier than moon and has a diameter 9 times that of moon. If the escape velocity on the planet is $v$, then the escape velocity on the moon will be:
A
$\frac{11 v}{3}$
B
$\frac{33 v}{8}$
C
$\frac{8 v}{33}$
D
$\frac{3 v}{11}$
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12