1
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Ordinary bodies P and Q radiate maximum energy with wavelength difference $3 \mu \mathrm{~m}$. The absolute temperature of body P is four times that of Q. The wavelength at which body Q radiates maximum energy is

A
2 $\mu$m
B
4 $\mu$m
C
6 $\mu$m
D
8 $\mu$m
2
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A lead bullet moving with velocity ' V ' strikes a wall and stops. If $75 \%$ of its energy is converted into heat, then the increase in temperature is ( $\mathrm{s}=$ specific heat of lead, $\mathrm{J}=$ mechanical equivalent of heat)

A
$\frac{3 \mathrm{~V}^2}{8 \mathrm{Js}}$
B
$\frac{5 \mathrm{~V}^2}{8 \mathrm{Js}}$
C
$\frac{3 \mathrm{~V}^2}{4 \mathrm{Js}}$
D
$\frac{5 \mathrm{~V}^2}{4 \mathrm{Js}}$
3
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

In photoelectric effect, the photocurrent

A
decreases with increase in frequency of incident photon.
B
increases with increase in frequency of incident photon.
C
does not depend on the frequency of photon but depends only on the intensity of incident light.
D
depends both on intensity and frequency of incident radiation.
4
MHT CET 2024 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The average force applied on the wall of a closed container depends as $\mathrm{T}^{\mathrm{x}}$ where T is the temperature of an ideal gas. The value of $x$ is

A
0.5
B
1
C
2
D
1.5
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