Verified Solution • 2025–26 Session moderate

QAIPMT-2010-Ph-2053: NEET 2010 Physics - Class 11 AIPMT-2010-Ph-2053 Solution: A source \(S_1\) is producing \(10^{15}\) photons per second of …

A source

S_1

is producing

10^{15}

photons per second of wavelength 5000

\text{\AA}

. Another source

S_2

is producing

1.02 \times 10^{15}

photons per second of wavelength 5100

\text{\AA}

. Then (power of

S_2

)/(power of

S_1

) is equal to 1.00 1.02 1.04 0.98

Multiple Choice Options

A 9.9 m
B 10.1 m
C 10 m
D 20 m

Step-by-Step Verified Solution

Since the man is in gravity free space, force on man + stone system is zero. Therefore centre of mass of the system remains at rest. Let the man goes x m above when the stone reaches the floor, then M man _ x = M stone _ 10 x = 0.5 50 _ 10 x = 0.1 m Therefore final height of man above floor = 10 + x = 10 + 0.1 = 10.1 m

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