1
IIT-JEE 2009 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

Photoelectric effect experiments are performed using three different metal plates p, q and r having work functions $$\phi_p=2.0~\mathrm{eV}$$, $$\phi_q=2.5~\mathrm{eV}$$ and $$\phi_r=3.0~\mathrm{eV}$$, respecticely. A light beam containing wavelengths of 550 nm, 450 nm and 350 nm with equal intensities illuminates each of the plates. The correct I-V graph for the experiment is (Take hc = 1240 eV nm)

A
IIT-JEE 2009 Paper 2 Offline Physics - Dual Nature of Radiation Question 3 English Option 1
B
IIT-JEE 2009 Paper 2 Offline Physics - Dual Nature of Radiation Question 3 English Option 2
C
IIT-JEE 2009 Paper 2 Offline Physics - Dual Nature of Radiation Question 3 English Option 3
D
IIT-JEE 2009 Paper 2 Offline Physics - Dual Nature of Radiation Question 3 English Option 4
2
IIT-JEE 2009 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

The mass M shown in the figure below oscillates in simple harmonic motion with amplitude A. The amplitude of the point P is

IIT-JEE 2009 Paper 2 Offline Physics - Simple Harmonic Motion Question 3 English

A
$${{{k_1}A} \over {{k_2}}}$$
B
$${{{k_2}A} \over {{k_1}}}$$
C
$${{{k_1}A} \over {{k_1} + {k_2}}}$$
D
$${{{k_2}A} \over {{k_1} + {k_2}}}$$
3
IIT-JEE 2009 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

A uniform rod of length L and mass M is pivoted at the centre. Its two ends are attached to two springs of equal spring constants $$k$$. The springs are fixed to rigid supports as shown in the figure, and the rod is free to oscillate in the horizontal plane. The rod is gently pushed through a small angle $$\theta$$ in one direction and released. The frequency of oscillation is

IIT-JEE 2009 Paper 2 Offline Physics - Simple Harmonic Motion Question 4 English

A
$${1 \over {2\pi }}\sqrt {{{2k} \over M}} $$
B
$${1 \over {2\pi }}\sqrt {{k \over M}} $$
C
$${1 \over {2\pi }}\sqrt {{{6k} \over M}} $$
D
$${1 \over {2\pi }}\sqrt {{{24k} \over M}} $$
4
IIT-JEE 2009 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-2

The figure shows the PV plot of an ideal gas taken through a cycle ABCDA. The part ABC is a semicircle and CDA is half of an ellipse. Then,

IIT-JEE 2009 Paper 2 Offline Physics - Heat and Thermodynamics Question 13 English

A
the process during the path A $$\to$$ B is isothermal.
B
heat flows out of the gas during the path B $$\to$$ C $$\to$$ D.
C
work done during the path A $$\to$$ B $$\to$$ C is zero.
D
positive work is done by the gas in the cycle ABCDA.
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