Question

i) On which factor the amount of heat absorbed or emitted by a body does not depend? (a) Mass of the body (b) specific heat of the body (c) temperature difference of the body (d) density
ii) The object distance from a plane mirror is 5 cm. What will be the image distance? (a) 10 cm (b) 20 cm (c) 5 cm (d) 15 cm
iii) How many imagelimages will form for an object placed in between two plane mirrors kept parallel to each other? (a) 1 (b) 2 (d) indefinite (C) 3
iv) Kaleidoscope works on the property of-- (a) reflection (b) refraction (C) both (d) none
v) An example of enzyme is-- (a) Hydrogen per oxide (b) catalase (c) carbon di oxide (d) none
vi) Change of slaked lime to quick lime is-- (a) Endothermic reaction (b) exothermic reaction (c) electrolysis (d) thermal decomposition​

Answer 1

Explanation:

Heat absorbed by the body is directly proportional to the mass of the body, i.e., more the mass, more will be the heat absorbed by the body.

Q∝M

(ii) Heat absorbed by the body is directly proportional to the rise in temperature, i.e., more heat will be absorbed when the body is heated at greater temperature.

Q∝Δt