甲、乙两物体的质量之比是3:1,比热容之比是3:2,它们吸收的热量之比是2:1,则甲、乙两物体升高温度之

2025-06-23 22:54:38
推荐回答(1个)
回答1:

由题知,m :m =3:1,c :c =3:2,
甲、乙两物体吸收的热量:Q :Q =2:1,
∵Q =cm△t,
Q
Q
=
c m △t
c m △t
=
2
1
,即:
3× 3× △t
2×1× △t
=
2
1

∴甲、乙两物体升高温度的比值:
△t
△t
=
4
9

故选B.