1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

A force F = a + bx acts on a particle in the x-direction where a and b are constants. The work done by this force during a displacement from x = 0 to x = d is

A
$$\left( {a + {{bd} \over 2}} \right)d$$
B
$$\left( {ad + {{bd} \over 2}} \right)$$
C
$$\left( {{{ad + bd} \over 2}} \right)$$
D
$$(ad + b){d \over 2}$$
2
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

A proton has kinetic energy E = 100 eV which is equal to that of a photon. The wavelength of photon is $$\lambda$$2 and that of proton is $$\lambda$$1. The ratio $${{{\lambda _2}} \over {{\lambda _1}}}$$ is proportional to

A
E2
B
E$$^{{1 \over 2}}$$
C
E$$-$$1
D
E$$^{ - {1 \over 2}}$$
3
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

A block of mass 10 kg rests on a rough inclined plane making an angle of 30$$^\circ$$ with the horizontal. The coefficient of static friction between the block and the plane is 0.1. The friction force on the block is

A
4.9 N
B
49$$\sqrt3$$ N
C
49 N
D
0.1 $$\times$$ 49$$\sqrt3$$ N
4
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

Which of the following graphs show the correct relation between conductivity and temperature for a metallic conductor?

A
BITSAT 2021 Physics - Heat and Thermodynamics Question 12 English Option 1
B
BITSAT 2021 Physics - Heat and Thermodynamics Question 12 English Option 2
C
BITSAT 2021 Physics - Heat and Thermodynamics Question 12 English Option 3
D
BITSAT 2021 Physics - Heat and Thermodynamics Question 12 English Option 4
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