JEE-MAIN SERIES Physics
Radiation
4 previous year questions.
Volume: 4 Ques
Yield: Medium
High-Yield Trend
2
2023 1
2019 1
2014 Chapter Questions 4 MCQs
01
PYQ 2014
medium
physics ID: jee-main
Parallel rays of light of intensity I=912 Wm are incident on a spherical black body kept in surroundings of temperature 300 K . Take Stefan constant and assume that the energy exchange with the surroundings is only through radiation The final steady state temperature of the black body is close to
1
330 K
2
660 K
3
990 K
4
1550 K
02
PYQ 2019
easy
physics ID: jee-main
To verify Ohm's law, a student connects the voltmeter across the battery as, shown in the figure. The measured voltage is plotted as a function of the current, and the following graph is obtained: If is almost zero, identify the correct statement:
1
The value of the resistance is
2
The emf of the battery is and the value of is
3
The emf of the battery is and its internal resistance is
4
The potential difference across the battery is when it sends a current of
03
PYQ 2023
easy
physics ID: jee-main
A bowl filled with very hot soup cools from to in 2 minutes when the room temperature is . How long it will take to cool from to ?
1
2 minutes
2
1 minute
3
minutes
4
minute
04
PYQ 2023
hard
physics ID: jee-main
Match List I with List II:
Choose the correct answer from the options given below:
| List I | List II | ||
| A | Microwaves | i | Radioactive decay of the nucleus |
| B | Gamma waves | ii | Rapid acceleration and deceleration of electrons in aerials |
| C | Radio waves | iii | Inner shell electrons |
| D | X - rays | iv | Klystron valve |
1
A-I, B-II, C-III, D-IV
2
A-I, B-III, C-IV, D-II
3
A-IV, B-I, C-II, D-III
4
A-IV, B-III, C-II, D-I