1
JEE Main 2024 (Online) 5th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A simple pendulum doing small oscillations at a place $$R$$ height above earth surface has time period of $$T_1=4 \mathrm{~s}$$. $$\mathrm{T}_2$$ would be it's time period if it is brought to a point which is at a height $$2 \mathrm{R}$$ from earth surface. Choose the correct relation [$$\mathrm{R}=$$ radius of earth] :

A
$$3 \mathrm{~T}_1=2 \mathrm{~T}_2$$
B
$$\mathrm{T}_1=\mathrm{T}_2$$
C
$$2 \mathrm{~T}_1=3 \mathrm{~T}_2$$
D
$$2 \mathrm{~T}_1=\mathrm{T}_2$$
2
JEE Main 2024 (Online) 5th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II :

LIST I LIST II
A. Kinetic energy of planet I. $$
-\mathrm{GMm} / \mathrm{a}
$$
B. Gravitation Potential energy of sun-planet system II. $$
\mathrm{GMm} / 2 \mathrm{a}
$$
C. Total mechanical energy of planet III. $$
\frac{\mathrm{Gm}}{\mathrm{r}}
$$
D. Escape energy at the surface of planet for unit mass object IV. $$
-\mathrm{GMm} / 2 \mathrm{a}
$$

(Where $$\mathrm{a}=$$ radius of planet orbit, $$\mathrm{r}=$$ radius of planet, $$\mathrm{M}=$$ mass of Sun, $$\mathrm{m}=$$ mass of planet)

Choose the correct answer from the options given below :

A
(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
B
(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
C
(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
D
(A)-(I), (B)-(IV), (C)-(II), (D)-(III)
3
JEE Main 2024 (Online) 5th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The heat absorbed by a system in going through the given cyclic process is :

JEE Main 2024 (Online) 5th April Morning Shift Physics - Heat and Thermodynamics Question 8 English

A
61.6 J
B
431.2 J
C
19.6 J
D
616 J
4
JEE Main 2024 (Online) 5th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

In the given figure $$\mathrm{R}_1=10 \Omega, \mathrm{R}_2=8 \Omega, \mathrm{R}_3=4 \Omega$$ and $$\mathrm{R}_4=8 \Omega$$. Battery is ideal with emf $$12 \mathrm{~V}$$. Equivalent resistant of the circuit and current supplied by battery are respectively :

JEE Main 2024 (Online) 5th April Morning Shift Physics - Current Electricity Question 8 English

A
$$12 \Omega$$ and $$11.4 \mathrm{~A}$$
B
$$10.5 \Omega$$ and $$1.14 \mathrm{~A}$$
C
$$10.5 \Omega$$ and $$1 \mathrm{~A}$$
D
$$12 \Omega$$ and $$1 \mathrm{~A}$$
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