Kinetic Theory of Gases and Radiation MHT-CET pyq's

 MHT-CET 2005

1. A black body is heated from 27 to 927 C.The radiation emitted will be

• (A) 1 : 4 
• (B) 1 : 8
• (C) 1 : 16
• (D) 1 : 256 

2. In terms of mechanical unit, C - C = .... where, C and C areyp principal specific heats. 

• (A) R
• (B) R/M
• (C) R/J
• (D) R/MJ

3. At constant pressure, which of the following is true? 

• (A) c ∝ √ρ
• (B) c ∝ 1/ρ
• (C) c ∝ ρ 
• (D) c ∝ 1/√ρ

4. The temperature, at which the rms velocity of hydrogen is four times of its value at NTP is 

• (A) 819°C
• (B) 1092°C
• (C) 4368°C
• (D) 4095°C 

MHT-CET 2007

5. The gases carbon-monoxide (CO) and nitrogen at the same temperature have kinetic energy E1 and E2 respectively. Then,

• (A) E1 = E2
• (B) E1 > E2
• (C) E1 < E2
• (D) E1 and E2 cannot be compared