AIIMS (All India Institute of Medical Sciences) Physics: Questions 149 - 151 of 500

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Question number: 149

» Current Electricity » Electric Current

Appeared in Year: 2004

MCQ▾

Question

Eels are able to generate current with biological cells called electro plaques. The electro plaques in an Eel are arranged in 100 rows, each row stretching horizontally along the body of the fish containing 5000 electro plaques. The arrangement is suggestively shown below. Each electro plaques have an emf of 0.15 V and internal resistance of 0.25 Ω. The water surrounding the Eel completes a circuit between the head and its tail. If the water surrounding it has a resistance of 500 Ω, the current an Eel can produce in water is about: - [AIIMS]

Choices

Choice (4) Response

a.

15 A

b.

1.5 A

c.

30 A

d.

3.0 A

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Question number: 150

» Properties of Solids & Liquids » Boyle's Law & Applications

Appeared in Year: 2006

MCQ▾

Question

By sucking through a straw, a student can reduce the pressure in his lungs to 750 mm of Hg. Using the straw, he can drink water from a glass up to a maximum depth of – [AIIMS]

Choices

Choice (4) Response

a.

10 cm

b.

13.6 cm

c.

75 cm

d.

1.36 cm

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Question number: 151

» Dual Nature of Matter and Radiation » Black-Body Radiation

Appeared in Year: 2006

MCQ▾

Question

Three objects coloured black, gray and white can withstand hostile conditions up to 2800°C. These objects are thrown into a furnace where each of them attains a temperature of 2000°C. Which object will glow brightest?

Choices

Choice (4) Response

a.

Gray object

b.

The black object

c.

The white object

d.

Question does not provide sufficient data or is vague

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