EASY
CTET Paper 2
IMPORTANT
Earn 100

Photoelectric cell is a device which converts _____.

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Important Questions on Work, Power and Energy

MEDIUM
CTET Paper 2
IMPORTANT
Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>Previous Years' Questions>Q 68
A body having mass 2 kg is dropped from a height 10 m. When it reaches on earth, its kinetic energy will be?(g = 9.8 m/s).
MEDIUM
CTET Paper 2
IMPORTANT
Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>Previous Years' Questions>Q 69
Impression of an image persists on the retina of human eye for about _____.
MEDIUM
CTET Paper 2
IMPORTANT
Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>Previous Years' Questions>Q 70

Light is falling on the surfaceS1, S2, and S3 as shown below. The surface on which the angle of incidence is equal to the angle of reflection are _____. 

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CTET Paper 2
IMPORTANT
Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>Previous Years' Questions>Q 71

In the diagram of human eye given below, the part marked by A, B, C and D should be labelled as _____.

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CTET Paper 2
IMPORTANT
Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>Previous Years' Questions>Q 72
The ultrasound equipment used for investigating medical problems work at frequency _____.
EASY
CTET Paper 2
IMPORTANT
Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>Previous Years' Questions>Q 73
Which one of the following is not a characteristic of thermal radiation?
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CTET Paper 2
IMPORTANT
Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>Previous Years' Questions>Q 74
Which one of the following effects is not found in sound waves?
EASY
CTET Paper 2
IMPORTANT
Science and Pedagogy CTET and TETs>Chapter 10 - Work, Power and Energy>Previous Years' Questions>Q 75
The image produced by a concave lens is always _____.