Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
Choose the correct statements from the following : (1) A temperature change which increases the length of a steel rod by 0.1% will increase its volume by nearly 0.3%
25
Oct
Choose the correct statements from the following : (1) A temperature change which increases the length of a steel rod by 0.1% will increase its volume by nearly 0.3% Choose the correct statements from the following : (1) A temperature change which increases the length of a steel rod by 0.1% will increase its volume [...]
The temperature drops through a two-layer furnace wall by 900 C. Each layer is of equal area of cross-section. Which of the following actions will result in lowering the temperature
25
Oct
The temperature drops through a two-layer furnace wall by 900 C. Each layer is of equal area of cross-section. Which of the following actions will result in lowering the temperature The temperature drops through a two-layer furnace wall by 900 C. Each layer is of equal area of cross-section. Which of the following actions will [...]
A heated body emits radiation which has maximum intensity at frequency vm. If the temperature of the body is doubled then (1) the maximum intensity radiation will be at frequency
25
Oct
A heated body emits radiation which has maximum intensity at frequency vm. If the temperature of the body is doubled then (1) the maximum intensity radiation will be at frequency A heated body emits radiation which has maximum intensity at frequency vm. If the temperature of the body is doubled then (1) the maximum intensity [...]
A hollow and a solid sphere of same material and identical outer surface are heated to the same temperature. (1) In the beginning both will emit equal amount of radiation
25
Oct
A hollow and a solid sphere of same material and identical outer surface are heated to the same temperature. (1) In the beginning both will emit equal amount of radiation A hollow and a solid sphere of same material and identical outer surface are heated to the same temperature. (1) In the beginning both will [...]
Two bodies A and B have thermal emissivities of 0.01 and 0.81, respectively. The outer surface areas of the two bodies are the same. The two bodies emit total radiant power at the same rate.
25
Oct
Two bodies A and B have thermal emissivities of 0.01 and 0.81, respectively. The outer surface areas of the two bodies are the same. The two bodies emit total radiant power at the same rate. respectively. The outer surface areas of the two bodies are the same. The two bodies emit total radiant power at [...]
Choose the correct statements from the following: (1) Good reflectors are good emitters of thermal radiation (2) Burns caused by water at 100 C
25
Oct
Choose the correct statements from the following: (1) Good reflectors are good emitters of thermal radiation (2) Burns caused by water at 100 C Choose the correct statements from the following: (1) Good reflectors are good emitters of thermal radiation (2) Burns caused by water at 100 C October 25, 2020 Category: Uncategorised (JEE Advanced [...]
A polished metallic piece and a black painted wooden piece are kept in open in bright sun for a long time. Which of the following statements is/are correct ?
25
Oct
A polished metallic piece and a black painted wooden piece are kept in open in bright sun for a long time. Which of the following statements is/are correct ? A polished metallic piece and a black painted wooden piece are kept in open in bright sun for a long time. Which of the following statements [...]
During heat exchange, temperature of a solid mass does not change. In this process, heat
25
Oct
During heat exchange, temperature of a solid mass does not change. In this process, heat During heat exchange heat temperature of a solid mass does not change. In this process October 25, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,
Two models of a windowpane are made. In one model, two identical glass panes of thickness 3 mm are separated with an air gap of 3 mm. This composite system is fixed in the window of a room.
25
Oct
Two models of a windowpane are made. In one model, two identical glass panes of thickness 3 mm are separated with an air gap of 3 mm. This composite system is fixed in the window of a room. two identical glass panes of thickness 3 mm are separated with an air gap of 3 mm. [...]
A closed cubical box is made of a perfectly insulating material walls of thickness 8 cm and the only way for heat to enter or leave the box is through two solid metallic cylinderical plugs,
25
Oct
A closed cubical box is made of a perfectly insulating material walls of thickness 8 cm and the only way for heat to enter or leave the box is through two solid metallic cylinderical plugs, A closed cubical box is made of a perfectly insulating material walls of thickness 8 cm and the only way [...]