1
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The distance travelled by a particle is related to time t as $$x=4\mathrm{t}^2$$. The velocity of the particle at t=5s is :-

A
$$\mathrm{25~ms^{-1}}$$
B
$$\mathrm{20~ms^{-1}}$$
C
$$\mathrm{8~ms^{-1}}$$
D
$$\mathrm{40~ms^{-1}}$$
2
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List I with List II

List I List II
A. Isothermal Process I. Work done by the gas decreases internal energy
B. Adiabatic Process II. No change in internal energy
C. Isochoric Process III. The heat absorbed goes partly to increase internal energy and partly to do work
D. Isobaric Process IV. No work is done on or by the gas

Choose the correct answer from the options given below :

A
A-I, B-II, C-IV, D-III
B
A-II, B-I, C-III, D-IV
C
A-II, B-I, C-IV, D-III
D
A-I, B-II, C-III, D-IV
3
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A wire of length 1m moving with velocity 8 m/s at right angles to a magnetic field of 2T. The magnitude of induced emf, between the ends of wire will be __________.

A
20 V
B
8 V
C
16 V
D
12 V
4
JEE Main 2023 (Online) 25th January Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Match List I with List II

List I List II
A. Troposphere I. Approximate 65-75 km over Earth's surface
B. E-Part of Stratosphere II. Approximate 300 km over Earth's surface
C. F$$_2$$-Part of Thermosphere III. Approximate 10 km over Earth's surface
D. D-Part of Stratosphere IV. Approximate 100 km over Earth's surface

Choose the correct answer from the options given below :

A
A-III, B-IV, C-II, D-I
B
A-III, B-II, C-I, D-IV
C
A-I, B-IV, C-III, D-II
D
A-I, B-II, C-IV, D-III
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