Answer:
I don't know.
Explanation:
I have no idea what you are referring to.
A convex lens<span> makes </span>light<span> rays </span><span>converge </span>
The dead Zone is where you were find fish that are adapted to low light and low oxygen levels.
Answer:
(d) 2840 A
Explanation:
Threshold frequency can be be calculated using expresion below
(λ)= hc/ Φ
(λ) sodium/ (λ)tungsten = Φtungsten/ Φsodium
But (λ) sodium is given as 5460 A,
Φsodium = 2.3 eV
Φtungsten= 4.4 eV
If we substitute the values we can find
(λ)tungsten.
(λ)tungsten= [(λ) sodium × Φsodium]/ Φtungsten
=( 5460× 2.3)/4.4
= 2854A
Hence, threshold wavelength of tungsten is 2854A
Answer:
<h2>Heat flows from a warmer object to a cooler object. </h2>