NEET Physics: Questions 88 - 92 of 2098

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Question number: 88

» Physics and Measurement » SI Units

MCQ▾

Question

Wavelength of ray of light is 0.006 m. It is equal to

Choices

Choice (4) Response

a.

60 microns

b.

6 microns

c.

6000 microns

d.

All of the above

Question number: 89

» Kinematics » Motion in a Plane

MCQ▾

Question

A man throws balls with the same speed vertically upwards, one after the other at an interval of 2 seconds. What should be the speed of the throw so that more than two balls are in the sky at any time? (Given g = 9.8 m/s2)

Choices

Choice (4) Response

a.

At least 0.8 m/s

b.

Only with speed 19.6 m/s

c.

More than 19.6 m/s

d.

Any speed less than 19.6 m/s

Question number: 90

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

If there is a positive error of 50 % in the measurement of velocity of a body, then the error in the measurement of kinetic energy is

Choices

Choice (4) Response

a.

25%

b.

50%

c.

125%

d.

75%

Question number: 91

» Physics and Measurement » Errors in Measurement

MCQ▾

Question

The unit of percentage error is

Choices

Choice (4) Response

a.

Errors have got their own units which are different from that of physical quantity measured

b.

Different from that of physical quantity

c.

Percentage error is unitless

d.

Same as that of physical quantity

Question number: 92

» Kinematics » Motion in a Straight Line

MCQ▾

Question

A ball is thrown vertically upwards. Which of the following graphs represent velocity-time graph of the ball during its flight? (Air resistance is neglected)

Choices

Choice (4) Response

a.

b.

velocity-time graph of the ball - Choice B

Velocity-Time Graph of the Ball - Choice B

velocity-time graph of the ball - Answer B

c.

velocity-time graph of the ball - Choice C

Velocity-Time Graph of the Ball - Choice C

velocity-time graph of the ball -Answer c

d.

velocity-time graph of the ball -Choice D

Velocity-Time Graph of the Ball -Choice D

velocity-time graph of the ball - Answer D

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