1
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

The minimum energy required to launch a satellite of mass $$m$$ from the surface of earth of mass $$M$$ and radius $$R$$ in a circular orbit at an altitude of $$2 R$$ from the surface of the earth is:

A
$$\frac{5 G m M}{6 R}$$
B
$$\frac{2 G m M}{3 R}$$
C
$$\frac{G m M}{2 R}$$
D
$$\frac{G m M}{3 R}$$
2
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

A sheet is placed on a horizontal surface in front of a strong magnetic pole. A force is needed to:

A. hold the sheet there if it is magnetic.

B. hold the sheet there if it is non-magnetic.

C. move the sheet away from the pole with uniform velocity if it is conducting.

D. move the sheet away from the pole with uniform velocity if it is both, non-conducting and non-polar.

Choose the correct statement(s) from the options given below:

A
B and D only
B
A and C only
C
A, C and D only
D
C only
3
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

A $$10 \mu \mathrm{F}$$ capacitor is connected to a $$210 \mathrm{~V}, 50 \mathrm{~Hz}$$ source as shown in figure. The peak current in the circuit is nearly $$(\pi=3.14)$$ :

NEET 2024 Physics - Alternating Current Question 4 English

A
0.58 A
B
0.93 A
C
1.20 A
D
0.35 A
4
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

A metallic bar of Young's modulus, $$0.5 \times 10^{11} \mathrm{~N} \mathrm{~m}^{-2}$$ and coefficient of linear thermal expansion $$10^{-5}{ }^{\circ} \mathrm{C}^{-1}$$, length $$1 \mathrm{~m}$$ and area of cross-section $$10^{-3} \mathrm{~m}^2$$ is heated from $$0^{\circ} \mathrm{C}$$ to $$100^{\circ} \mathrm{C}$$ without expansion or bending. The compressive force developed in it is :

A
$$5 \times 10^3 \mathrm{~N}$$
B
$$50 \times 10^3 \mathrm{~N}$$
C
$$100 \times 10^3 \mathrm{~N}$$
D
$$2 \times 10^3 \mathrm{~N}$$
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