1
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

A man grows into a giant such that his height increases to 8 times his original height. Assuming that his density remains same, the stress in the leg will change by a factor of

A
$$2 \sqrt{2}$$
B
4
C
16
D
8
2
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The mass number of two nuclei $$\mathrm{P}$$ and $$\mathrm{Q}$$ are 27 and 125 respectively. The ratio of their radii $$R_P: R_Q$$ is given by:

A
9 : 25
B
3 : 5
C
27 : 25
D
5 : 3
3
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The current sensitivity of a galvanometer having 20 divisions is $$10 \mu \mathrm{A} /$$ div. If the resistance of the galvanometer is $$100 \Omega$$ then the value of the resistance to be used to convert this galvanometer in to an voltmeter to read up to $$1 \mathrm{~V}$$ is :

A
$$4 \times 10^{-6} \Omega$$ in series with the galvanometer.
B
$$4900 \Omega$$ in parallel with the galvanometer.
C
$$4 \times 10^{-3} \Omega$$ in series with the galvanometer.
D
$$4900 \Omega$$ in series with the galvanometer.
4
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a nuclear reaction 2 deuteron nuclei combine to form a helium nucleus. The energy released in $$\mathrm{MeV}$$ will be: (Given mass of deuteron $$=2.01355 \mathrm{~amu}$$. and mass of helium nucleus $$=4.0028 \mathrm{~amu}$$.

A
24.3 MeV
B
2.262 MeV
C
22.62 MeV
D
0.0243 MeV
EXAM MAP