KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics: Questions 217 - 220 of 268

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Question number: 217

» Electrostatics » Capacitors

Appeared in Year: 2014

MCQ▾

Question

What are the charges stored in the 1 µF and 2 µF capacitors in the circuit below, once the currents become steady?

Combination of resistors and capacitors

Combination of Resistors and Capacitors

Figure shows a circuit diagram of combination of resistors and capacitors.

Choices

Choice (4) Response

a.

4 µC and 8 µC respectively

b.

3 µC and 6 µC respectively

c.

8 µC and 4 µC respectively

d.

6 µC and 3 µC respectively

Question number: 218

» Rotational Motion » Rotational Kinetic Energy

MCQ▾

Question

A body rolls down an inclined plane. If its rotational kinetic energy is 50 % of its translation kinetic energy, then the body is –

Choices

Choice (4) Response

a.

A rod

b.

A ring

c.

A solid sphere

d.

A solid cylinder

Question number: 219

» Thermodynamics » Concept of Temperature

MCQ▾

Question

A solid copper sphere cools at the rate of 3.20 C per minute, when its temperature is 1770 C. Find the rate at which another solid copper sphere of twice the radius lose its temperature at 3770 C, if in both the cases, the room temperature is maintained at 270 C.

Choices

Choice (4) Response

a.

Equation

b.

7.290C min-1

c.

Equation

d.

Equation

Question number: 220

» Dual Nature of Matter and Radiation » Photoelectric Effect

MCQ▾

Question

If the wavelength of photon emitted due to transition of electron from third orbit to first orbit in a hydrogen atom is λ, then the wavelength of photon emitted due to transition of electron from fourth orbit to second orbit will be –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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