JEE-MAIN SERIES Physics
The Earth S Magnetic Field
4 previous year questions.
Volume: 4 Ques
Yield: Medium
High-Yield Trend
3
2023 1
2022 Chapter Questions 4 MCQs
01
PYQ 2022
medium
physics ID: jee-main
Two satellites A and B, having masses in the ratio 4 : 3, are revolving in circular orbits of radii 3r and 4r respectively around the earth. The ratio of total mechanical energy of A to B is
1
9 : 16
2
16 : 9
3
1 : 1
4
4 : 3
02
PYQ 2023
medium
physics ID: jee-main
The magnetic intensity at the centre of a long current carrying solenoid is found to be 1.6 x 103 Am-1. If the number of turns is 8 per cm, then the current flowing through the solenoid is_____A.
03
PYQ 2023
hard
physics ID: jee-main
Certain galvanometers have a fixed core made of non magnetic metallic material. The function of this metallic material is
1
to oscillate the coil in magnetic field for longer period of time
2
to produce large deflecting torque on the coil
3
to make the magnetic field radial
4
to bring the coil to rest quickly
04
PYQ 2023
medium
physics ID: jee-main
Match List-I with List-II
| List- I (Layer of atmosphere) | List- II (Approximate height over earth's surface) | ||
| A. | F1-Layer | I. | 10 km |
| B. | D-Layer | II. | 170-190 km |
| C. | Troposphere | III. | 100 km |
| D. | E-layer | IV. | 65-75 km |
Choose the correct answer from the options given below:
1
A-II, B-IV, C- III, D - I
2
A-III, B-IV, C - I, D - II
3
A-II, B-IV, C-I, D - III
4
A-II, B-I, C- IV, D - III