AIIMS (All India Institute of Medical Sciences) Physics: Questions 424 - 428 of 500

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Question number: 424

» Rotational Motion » Concepts of Rotational Motion

MCQ▾

Question

A stone tied to the end of 15 cm long string is whirled in a horizontal circle. If the centripetal acceleration is , its angular speed in is –

Choices

Choice (4) Response

a.

b.

8

c.

9

d.

15

Question number: 425

» Laws of Motion » Force and Inertia

MCQ▾

Question

A box is put on a scale which is adjusted to read zero, when the box is empty. A stream of pebbles is then poured into the base from a height above its bottom at a rate of pebbles per second. Each pebble has a mass If the pebbles collide with the box such that they immediately come to rest after collision, then the scale reading at time after the pebbles begin to fill the box is –

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 426

» Oscillations and Waves » Standing Waves in Strings and Organ Pipes

MCQ▾

Question

A string in a musical instrument is 60 cm long and its fundamental frequency is 800 Hz. If a frequency of 1200 Hz is to be produced, then required length of string is –

Choices

Choice (4) Response

a.

40 cm

b.

50 cm

c.

65 cm

d.

70 cm

Question number: 427

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

MCQ▾

Question

Which of the following cannot be deflected by magnetic field?

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 428

» Dual Nature of Matter and Radiation » Photoelectric Effect

Appeared in Year: 1999

MCQ▾

Question

Light of wavelength in Photoelectric effect gives electron of maximum Kinetic Energy . If wavelength change to then maximum kinetic energy of emitted electrons will be – [AIPMT]

Choices

Choice (4) Response

a.

Greater than 0.5 eV

b.

Less than 0.5 eV

c.

Photoelectric effect does not occurs

d.

0.5 eV

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